There are [tex]\frac{60!}{57!}[/tex] ways we can do it.
Since organization has 60 members from which we haveto pick one person at random to be the president, another person to be the vice president and a third person to be the transformer,
the president can be select in 60c1 = [tex]\frac{60!}{1! 59!}[/tex]
= [tex]\frac{60 *59!}{1*59!}[/tex]
= 60 ways
After this for vice president we have 59 members from which vice president can be select in 59c1 = 59 ways.
and for treasure we have 58 members from which treasure can be select in 58c1 = 58 ways.
∴ No. of ways in which we can select president, vice president and treasure = 60 × 59 × 58
= [tex]\frac{60 * 59 * 58 * 57!}{57!}[/tex]
= [tex]\frac{60!}{57!}[/tex]
Learn more about probability here;
https://brainly.com/question/13604758
#SPJ4
How do you find what percentage one number is of another?.
to find the percentage we divide the number with the other number which wew take it as base and multiply with 100
let us under stande this with an example
we want to know what percentage is 5 of 10
so we divide 5 by 10 and multiply it with 100
i.e. (5/10)*100 = 0.5*100 = 50%
hence we can say that 5 is 50% of 10
To learn more about percentages:
brainly.com/question/24304697
#SPJ4
We divide a number by another number, using that other number as the base, then multiply the result by 100 to get the percentage that one number is of another.
What is the percentage?A percentage is a figure or ratio stated as a fraction of 100 in mathematics.
We must divide the value by the entire value to find the percentage, and then multiply the resulting number by 100.
We place the percent symbol (%) next to the number to indicate that the number is a percentage.
For instance, you would have received a 75% grade if you answered 75 out of 100 questions correctly on a test (75/100).
To get what percentage one number is of another:
We divide the number by another number, use that other number as the base, and multiply the result by 100 to determine the percentage.
Let's use an example to further understand this:
We're curious about what proportion makes up 5 of 10.
Consequently, we increase it by 100 and divide 5 by 10.
That is (5/10) × 100 = 0.5 × 100 = 50%
So, we can say that 5 is equal to 10 / 50%.
Therefore, we divide a number by another number, using that other number as the base, then multiply the result by 100 to get the percentage that one number is of another.
Know more about percentages here:
https://brainly.com/question/9553743
#SPJ4
Trigonometric area formula: area = what is the area of triangle def? round to the nearest tenth of a square unit. 10. 3 square units 18. 0 square units 20. 0 square units 20. 6 square units.
The required area is 10.3 square units.
Area of triangle= 12 /(a* b)
Area of a triangle using trigonometric area formula = 1/2( a * b) sin(c)
here, base = a , height = b*sin(c)
Given ,
Only the sine of the included angle, whose two side lengths are specified, can be used despite the two angle measurements that have been provided. The EF and DF sides of our triangle's angle, which measures 31 degrees, are also provided.
On putting the values given in the formula we get,
Area = 1/2* 8 * 5sin(31)
= 20 * 0.51503807491
≈ 10.3
Therefore, the area of the triangle DEF is 10.3 square units.
To learn more about triangles
https://brainly.com/question/16912409
#SPJ4
Work out 2 1/2 - 1 1/3 Give your answer as a mixed number where appropriate.
Answer: 1 1/6
Step-by-step explanation:
(P.S: Everthing in italics are either fractions. mixed numbers, or numbers.
Change 2 1/2 and 1 1/3 to improper fractions. (5/2 and 4/3)Find the Least Common Denominator. (6) So our answer will have the denominator of 6.Subtract: 5/2 - 4/3. (7/6)Convert 7/6 to a mixed number. (1 1/6)And there ya' go! The answer is 1 1/6! You're welcome!
What five things happen when two parallel lines are cut by a transversal?.
The five things when two parallel lines are cut by a transversal are the corresponding angle, alternate interior angle, alternate exterior angle, consecutive interior angles, and alternate angle.
Here we have to find the five things that happen when two parallel lines are cut by a transversal.
When two parallel lines are cut by the transversal line it will form five angles.
Corresponding angle, alternate interior angle, alternate exterior angle, consecutive interior angles, and alternate angle.
From the given figure:
Corresponding angle:
∠1 and ∠5
∠2 and ∠6
∠3 and ∠7
∠4 and ∠8
consecutive angle:
∠3 and ∠6
∠4 and ∠5
alternate interior angle:
∠3 and ∠5
∠4 and ∠6
alternate exterior angle:
∠2 and ∠8
∠1 and ∠7
To know more about the parallel line and its transverse refer to the link given below:
https://brainly.com/question/24607467
#SPJ4
What are the four stages of transformation?.
There are four common types of transformations -
translation
rotation
reflection
dilation.
let m be the vector space of all 3x3 matrices, and let h be its subspace consisting of all a satisfying. what is the dimension of h
let m be the vector space of all 3x3 matrices, and let h be its subspace consisting of all a satisfying. The dimension of h will be 0 ≤ h ≤ 3
If m be the vector space , a subset h ⊆ m is a subspace of m if the ten axioms (L₁ , L₂ , L₃ , . . . . L₁₀) of m are satisfied on h but it suffices only two axioms to hold on h for h that are axioms of closure of h under two linear operations : the sum of vectors and their multiplication by scalars in the field F.
Let m is a vector space over a field F, a subset h which is closed under the two linear operation of m : the vector addition and multiplication of vector by scalar .
L₁ (∀x , y ∈m) , x+ y∈ m ---------(1)
L₂ (∀λ ∈ F) ( ∀ x∈ m ) λx ∈m -------(2)
A subset h⊆ m which satisfy (1) and (2) is a subspace of v
Dimension of Vector space and a subspace :
According to linear algebra theorem,
The number of vectors in all the basis if finitely generated vector space m is the same. This number is just the dimension of subspace m : dim m .
If m is spanned then here, dim m = 3
h ⊆ subs m <===> dim h < dim m
If h is subspace of m and dim m = 3 then,
dim h = h with 0≤ h ≤3
If h is zero, the dimension of improper subspace , h = {0}
If dim h = dim m = 3 the h = m since any basis A of h is a basis of m too and conversely,
Hence , any vector m of all 3×3 matrices and h be its subspace , the dim h will be 0 ≤ h ≤ 3
To know more about Vector space here
https://brainly.com/question/13058822
#SPJ4
A couple applie for a mortgage on a $125,000 houe. They plan to make a down payment of 20%. Find the monthly payment, total cot of the mortgage, and total interet paid on a 30-year mortgage at a fixed rate of 5. 2%
On a 30-years mortgage, the monthly payment is $686.39, total cost of mortgage is $100,000 and total interest paid is $122,100.4.
By using formula, M = [[tex]\frac{P [i(1+i)^{n} ]}{[(1+i)^{n-1} ] }[/tex]
Where, M is the monthly payment
P is the principal amount
i is the interest rate
n is the number of payments
As per question,
1) Months in 30 years (n) =30x12= 360
i = 5.2%
P = $125,000
By using the formula mentioned above,
monthly payment = $686.39
2) total cost of mortgage = home price - down payment
= 125,000 - 25000
= $100,000
3) total interest paid = (M x n) - P
= (686.39 x 360) - 125,000
= $122,100.4
If you don't repay the loaned money for the purchase or refinancing of a home, the lender has the right to seize your property under the terms of a mortgage, which is a contract between you and the lender. The standard four components of a mortgage payment are principal, interest, taxes, and insurance. The primary component is the sum that is subtracted from your outstanding loan balance.
To learn more about mortgage: https://brainly.com/question/23634190
#SPJ4
a transition matrix is called doubly stochastic if both rows and columns sum to 1. show that all finite-dimensional doubly stochastic matrices have a uniform stationary distribution.
Transition matrix is called a doubly stochastic matrix (if sum of each rows and columns is 1 ).
We can see that the distribution of doubly stochastic matrix for all finite dimensional has Uniform stationary distribution.
Doubly Stochastic Matrix
A transition random matrix P is defined as a dual random matrix if the sum of the rows and columns is one.
Therefore, for each column j of the doubly random matrix, let ∑ ipᵢⱼ = 1. Suppose the distribution π on S also has π₁ = π if the Markov chain starts with the initial distribution π₀ = π. That is, if the distribution at time 0 is π, the distribution of π remains 1, and this π is said to be stationary.
Example: A uniform distribution [[π(i) = 1/N for all i]] is stationary if the N × N stochastic transition matrix P is symmetric. More generally, the uniform distribution is stationary if the matrix P is doubly stochastic, i.e. the columns of P sum to 1 (we already know that the rows of P sum to all 1). are available). It is easy to see that when πn approaches a limiting distribution as n → ∞, this limiting distribution must be stationary. To see this, assuming lim n→∞ πn = π' , and n → ∞ in the equation πₙ₊₁ = πₙP, we get π = π'P. This shows that π' is stationary. So , the arguments given pass clearly and simply when the state space is finite.Hence, the required results is achieved .
For more information on the double random matrix, visit :
https://brainly.com/question/29025233
#SPJ4
The graph of a linear function passes through (−8,−4) and (4, 5). What is the equation of the function? A. y = −34x + 2 B. y = 34x + 2 C. y = −43x + 6 D. y = 43x + 6
Answer:
y = 3/4x + 2
Step-by-step explanation:
Not sure if you wrote your answer choices incorrectly, but if B is y=3/4x + 2 then the answer is B
B) what’s the probability of selling more than 3 radios?
The probability of selling more than radios is 0.07 when the probability of selling radios is from 0 to 5.
Given that,
In the picture we can see the full question.
We have to find what is the probability of selling more than 3 radios.
We know that,
In the picture there is a table
We have to first find the table then we get the probability of selling more than 3 radios.
First,
Given data is 100 weeks of sales data
Probability is number of weeks/ 100 weeks
x=0, number of weeks is 3
P=3/100=0.03
x=1, number of weeks is 20
P=20/100=0.2
x=2, number of weeks is 50
P=50/100=0.5
x=3, number of weeks is 20
P=20/100=0.2
x=4, number of weeks is 5
P=5/100=0.05
x=5, number of weeks is 2
P=2/100=0.02
The probability table we get,
x term are 0,1,2,3,4,5
P(x) |0.03 | 0.2 | 0.5 | 0.2 |0.05| 0.02|
The probability of selling more than 3 radios is sum of the probability of selling 4 radios and 5 radios
P(x>3)=P(x=4)+P(x=5)
P(x>3)= 0.05+0.02
P(x>3)= 0.07
Therefore, The probability of selling more than radios is 0.07 when the probability of selling radios is from 0 to 5.
To learn more about probability visit: https://brainly.com/question/11234923
#SPJ4
Which equation represents the line that passes through (- 6 7 and (- 3 6 )?.
The equation represents the line that passes through (- 6, 7) and (- 3, 6) is y = -1/3x +5
What is meant by slope-intercept form?The slope-intercept form is just a means of formulating a line's equation so that the slope (steepness) and y-intercept (where the line crosses the vertical y-axis) are clearly visible. This form is frequently referred to as the y = mx + b form. This line form is one of the most prevalent in algebra classes.
A line's slope-intercept form is y = mx + b, where m is its slope and b is its y-intercept.
The equation of the line which is passing through two points is:
y₂-y₁ / x₂-x₁
(6-7)/(-3+6)=-1/3
A line's slope-intercept form is y =mx +b, where m is the slope and b is the y intercept.
y = -1/3 x +b. We must now calculate b, the y intercept. To find b, plug one of the given points into the previous equation and solve for b.
6 = -1/3(-3) + b
b = 5
y = -1/3x +5
Therefore, the equation represents the line that passes through (- 6, 7) and (- 3, 6) is y = -1/3x +5
To know more about slope-intercept form, visit:
https://brainly.com/question/9682526
#SPJ4
a new car sells for $27,300. it exponentially depreciates at a rate of 6.1% to $22,100. how long did it take for the car to depreciate to this amount? round your answer to the nearest tenth of a year.
The time of depreciation is 3.3 year
How to determine the time of depreciation?From the question, we have the following parameters:
Initial value = $27,300
Final value = $22,100
Rate of depreciation = 6.1% per year
These parameters can be represented using the following exponential equation
A(n) = A *(1 - r)ⁿ
Where
n = number of years
A = Initial value = 27300
A(n) = Final value = 22100
r = rate of decay = 6.1%
Substitute the known values in the above equation, so, we have the following representation
27300*(1 - 6.1%)ⁿ = 22100
Divide
(1 - 6.1%)ⁿ = 0.81
0.939ⁿ = 0.81
Take the logarithm
n = log(0.81)/log(0.939)
Evaluate
n = 3.3
Hence, the number of years is 3.3 year
Read more about exponential equation at
https://brainly.com/question/27161222
#SPJ1
a single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.230 a. the loop is inside a solenoid, with the plane of the loop perpendicular to the magnetic field of the solenoid. the solenoid has 30.0 turns/cm and carries a clockwise current of 15.0 a.
Using Magnetic field,
a) Magnetic force acting on loop is 2.59 ×10⁻⁴ N
b) Torque acting on loop is zero.
We have given that,
Each side of square loop wire , L = 2.00 cm
Square loop carring current , I₂ = 0.230 A
Solenoid , has n= 30 turns/cm
Current Carrying in solenoid, I₁ = 15.0 A
Magnetic field inside solenoid , B = μ₀ n I₁
where, μ₀---> susceptibility of free space
μ₀ = 4π×10⁻⁷A/m
pulgging all known values in above formula,
B = (4π×10⁻⁷ A/m) 30 turn/cm × 100cm /1m (15.0 A)
= 5.6 ×10⁻² T
Now, the magnitude of magnetic force on one side of loop , F = B× L× I₂× sinθ
=> F = ( 5.6 ×10⁻² T )(0.02 m)(0.230 A) sin90°
=> F = 0.02599 × 10⁻² N
=> F = 2.59 ×10⁻⁴ N
The force acting on one side of loop lie in the plane of loop, are prependicular to the all sides and directed away from interior of the loop. Thus, these force strech the loop do tends to rotate it.
So, if loop is not rotate then there is not torque associated. Hence, Torque acing on loop is zero.
To learn more about Magnetic field, refer:
https://brainly.com/question/1691855
#SPJ4
Complete question:
A single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.230A. The loop is inside a solenoid, with the plane of the loop perpendicular to the magnetic field of the solenoid. The solenoid has 30.0 turns/cm and carries a clockwise current of 15.0 A. Find (a) the force on each side of the loop and (b) the torque acting on the loop.
point-slope form for the line that passes through the point (1, –1) and has a slope of 4.
Answer:
y= mx+b
y= 4x+b
-1=4(1)+b
-1=4+b
-4 -4
-5=b
y = 4x -5
Step-by-step explanation:
suppose that a disk drive has 100 cylinders, numbered from 0 to 99. the queue which is maintained is 10, 20, 50, 70, 80 in order. the disk arm is initially at cylinder 40. starting from the current head position, what is the total distance (head movement) for following algorithms?
Using disk scheduling algorithm,
Total distance ( head movement) for following algorithms is 120.
Disk Scheduling Algorithm
Disk scheduling is performed by the operating system to schedule I/O requests to arrive at the disk. Disk scheduling is also called I/O scheduling.
we have given that
Total cylinders on a disk drive = 100 , numbered from 0 to 99.
The queue order is 10, 20, 50, 70, 80 .
Current disk position = cylinder 40
Starting from current head position.
We have to calculate the total distance (head movement) for the following algorithm.
Since, disk moving towards zero.
Now , Total distance = |40-10| + | 10-0| + |0-20| +
|20-50| + |50-70| + |70-80|
= 30 + 10 + 20 + 30 + 20 + 10
= 120
Hence, the required distance is 120.
To learn more about disk scheduling algorithm, refer:
https://brainly.com/question/14848718
#SPJ4
Yoko made $252 for 12 hours of work.
At the same rate, how much would she make for 9 hours of work?
Answer:
$189
Step-by-step explanation:
Calculate a unit rate (dollars per hour) then times by 9 hours. OR use a proportion. You will get the same answer.
dollars/hour
= $252/12hours
= $21/1hour
= 21 $/hr
21 × 9 = 189
Yoko will make $189 for 9 hours.
OR use a proportion.
$/hour = $/hour
252/12 = x/9
cross-multiply
12x = 252(9)
12x = 2268
divide by 12
x = 2268/12
x = 189
same answer!
molly drove 150 miles in the same amount of time that it took a single engine plane to travel 600 miles. the speed of the plane was 150 mph faster than the speed of the car. find the speed of the plane.
Answer:
The speed of the plane is 200 mph
Step-by-step explanation:
distance = rate x time
The times are equal.
Car:
150 = rt
[tex]\frac{150}{r}[/tex] = t
Plane:
600 = (r+ 150)t
[tex]\frac{600}{(r+ 150)}[/tex] = t
Set the two equation equal to each other and solve for r:
[tex]\frac{150}{r}[/tex] = [tex]\frac{600}{(r+150)}[/tex] Multiple both sides by r(r+ 150) to clear the fraction
[tex]\frac{r(r+150)}{1}[/tex] ([tex]\frac{150}{r}[/tex]) = [tex]\frac{r(r + 150)}{1 }[/tex] ([tex]\frac{600}{(r+ 150)}[/tex])
(r+150)(150) = 600r
150r + 22500 = 600r Subtract 150r from both sides
22500 = 450r Divide both sides by 450
50 = r This is the rate of the car.
The plane is 50 + 150 = 200
Carol plans to sell twice as many magazine
subscriptions as Jennifer. If Carol and Jennifer
need to sell at least 90 subscriptions in all, which
inequality could be used to determine how many
subscriptions, x, Jennifer needs to sell?
1) x245
HIDD
97102
2)
2x ≥ 90
nayow & noftuloa juoy zasigx3
3) 2x-x≥90
4) 2x+x≥90
The inequality could be used to determine the number of subscriptions that Jennifer needs to sell is 2x+x≥90.
What is meant by inequality?In mathematics, an inequality is a relationship that results from a non-equal comparison of two integers or other mathematical expressions. It is most typically used on a number line to compare the sizes of two numbers. There are several notations for various sorts of inequalities:
The symbol a < b indicates that an is less than b.
The symbol a > b indicates that an is greater than b.
These are known as strict inequalities, because an is strictly less than or strictly bigger than b. Equivalence is not allowed.
Given,
Carol intends to sell twice the number of magazine subscriptions as Jennifer..
And also given that,
Carol and Jennifer needs to sell at least 90 subscriptions in all
Let Carol sell 2x magazines then Jennifer sell x
So, they need to sell at least 90
x+2x ≥ 90
∴2x+x ≥ 90
Hence, the answer is option 4
To know more about inequality, visit:
https://brainly.com/question/20383699
#SPJ1
The chance of contracting strep throat when coming into contact with an infected person is estimated as 0.15. Suppose the four children of a family come into contact with an infected person. Conduct a simulation to answer the following questions.Part A Define your simulation, and use the random number tablebelow to conduct 15 trials. Clearly identify each trial on the table. Part B: What is the probability of one of the children getting thedisease? Part C: What is the probability of two of the children getting thedisease? Part D: What is the probability of at least two of the childrengetting the disease? Part E: What is the probability of none of the children getting thedisease?
The answers to all subquestions would be
Part A: [tex]P(X=x)= {15 \choose x} (0.15)^{x} (0.85)^{15-x}[/tex], x= 0, 1, 2, 3, ..., 15.
Part B: P(X = 1) = 0.2312
Part C: P(X = 2) = 0.2656
Part D: P(X ≥ 2) = 0.6814
Part E: P(X = 0) = 0.0874
What is a binomial distribution?
The binomial distribution with parameters n and p in probability theory and statistics is the discrete probability distribution of the number of successes in a series of n independent experiments, each asking a yes-no question and each with its own Boolean-valued outcome: success or failure.
Let X be the random variable.
The number of trials n = 15, P=0.15
X ~ Bin(n, p)
Part A:
[tex]P(X=x)= {n \choose x} (p)^{x} (1-p)^{n-x}[/tex]
[tex]P(X=x)= {15 \choose x} (0.15)^{x} (0.85)^{15-x}[/tex], x=0, 1, 2, 3,..., 15.
Part B:
[tex]P(X=1)= {15 \choose 1} (0.15)^{1} (0.85)^{15-1}\\\\P(X=1)= {(15)} (0.15) (0.85)^{14}\\\\P(X=1)=0.2312[/tex]
Part C:
[tex]P(X=2)= {15 \choose 2} (0.15)^{2} (0.85)^{15-2}\\\\P(X=2)= {(105)} (0.15)^2 (0.85)^{13}\\\\P(X=2)=0.2856[/tex]
Part D:
[tex]P(X\geq 2)= 1-P(X < 2)\\\\P(X\geq 2)=1-P(X=0)-P(X=1)\\\\P(X\geq 2)=1-0.0873-0.3212\\\\P(X\geq2)=0.6814[/tex]
Part E:
The probability of none of the children getting the disease will be
[tex]P(X=0)= {15 \choose 0} (0.15)^{0} (0.85)^{15-0}\\\\P(X=0)= {(1)} (1) (0.85)^{15}\\\\P(X=1)=0.8734[/tex]
Hence,
Part A: [tex]P(X=x)= {15 \choose x} (0.15)^{x} (0.85)^{15-x}[/tex], x= 0, 1, 2, 3, ..., 15.
Part B: P(X = 1) = 0.2312
Part C: P(X = 2) = 0.2656
Part D: P(X ≥ 2) = 0.6814
Part E: P(X = 0) = 0.0874
To learn more about binomial distribution, visit:
https://brainly.com/question/9325204
#SPJ4
A father i three time a old a hi on in 14 year time he will be twice a old a hi on how old are they now?
The present age of the son is 12 years and the present age of the father is 36 years.
What is the age problem?
Age problems are algebra word problems that deal with the ages of people currently, in the past, or in the future.
Let the present age of the son be 'x'
Then, the present age of the father will be '3x'
According to the question,
The age of the son after 12 years = (x+12) years
And the age of the father after 12 years = 2(x+12) years
Therefore,
or, 3x+12=2(x+12)
or, 3x+12=2x+24
or, x=12
And, the father's age = 3*12 = 36 years
Hence, the present age of the son is 12 years and the present age of the father is 36 years.
To learn more about age problems
https://brainly.com/question/25965150
#SPJ4
ondegeneracy of an optimal basic feasible solution in one problem implies uniqueness of optimal solutions for the other?
Yes , on degeneracy of an optimal basic feasible solution in one problem (primal) implies uniqueness of optimal solutions for the other(dual).
Degenerate Elementary Feasible Solutions:
Elementary feasible solutions where one or more of the elementary variables are zero.
Discrete Variable: A decision variable that can only accept integer values.
Feasible Solution: A solution that satisfies all constraints.
Yes, a linear programming optimization problem can have a degenerate optimal solution, but a dual problem has a unique optimal solution, but only if instead of the optimal solution there is a degenerate optimal solution.
Example: Suppose the main problem depends on
max (z) = x₁+x₂
x₁≤1
x₁+x₂≤1
x₁, x₂≥0.
The solution (1,0) is optimal and degenerate, but all solutions (a,1−a) for 0≤a≤1 are also optimal.
dual is min(z)= y₁+y₂
subject to
y₁+y₂≥1,
y₂≥1,
y₁,y₂≥0.
dual has a unique (degenerate) optimal solution (0,1). So, there are situations where there are mostly degenerate optima, but unique dual optima.
To learn more about Primal and dual LLP, refer:
https://brainly.com/question/15056475
#SPJ4
What i an equation of the line that pae through the point (6,-4) perpendicular to the line 2x-y=5
Answer:
x +2y = -2
Step-by-step explanation:
You want the line perpendicular to 2x-y = 5 that passes through (6, -4).
Perpendicular lineThe slopes of perpendicular lines are opposite reciprocals. This means the equation of the perpendicular line can be formed by swapping the coefficients of x and y, and negating one of them. We want the leading coefficient to be positive, so we choose our line's equation to be ...
2x -y = constant . . . . . . . . . . original line
x +2y = <some constant>
The constant must be chosen so the equation is true at the given point:
x + 2y = (6) +2(-4) = -2
An equation for the perpendicular line is ...
x +2y = -2
Is it possible to have a triangle with 3cm 5cm 7cm?.
Answer:
Step-by-step explanation:
Yes it is possible because of the working man solution of indigineous triangles in the diameter of a ml
what are the group (model) degrees of freedom associated with the f-test for evaluating these hypotheses?
The hypotheses are:
Null hypothesis: the average test scores are the same for the different teaching methods.
Alternative hypothesis: the average test scores are different for the different teaching methods.
To determine the degree of freedom for the F test: we must find two sources of variation such that we have two variances. The two sources of variation are: Factor (between groups) and the error (within groups) and add this up. Or use (N - 1). N is number in sample.
Hence we get the required answer.
Learn more about Hypothesis here:
brainly.com/question/15980493
#SPJ4
the waiting time at an elevator is uniformly distributed between 30 and 200 seconds. find the mean and standard deviation of the waiting time.
49.07 is the mean and standard deviation of the waiting time .
What is standard deviation in math?
Your dataset's average level of variability is represented by the standard deviation. It reveals, on average, how far away from the mean each value is.
A low standard deviation means that values are clustered close to the mean, whereas a high standard deviation means that values are typically far from the mean.
Let X shows the waiting time. So mean
μ = E(x) = a + b/2 = 30 + 200/2 = 115
Standard deviaiton
σ = [tex]\sqrt{\frac{(b - a )^{2} }{12} }[/tex]
= [tex]\sqrt{\frac{(200 -30)^{2} }{12} }[/tex]
= 49.07
Learn more about standard deviation
brainly.com/question/16555520
#SPJ4
the t test for the difference between the means of 2 independent populations when standard deviations are unknown assumes that the samples are randomly and independently drawn population variances are equal populations are approximately normal or sample sizes are greater than 30 all of the above
The correct option for the t test for the difference between the means of 2 independent populations is sample variances are equal.
What is the t-test for two independent samples?The Autonomous samples t Test analyzes the method for two free gatherings to decide if there is factual proof that the related populace implies are essentially unique. The Free samples t Test is a parametric test. This test is otherwise called: Free t Test.
According to given data:The t test for the difference between the means of 2 independent populations when standard deviations are unknown, we must assume that sample variances are equal.
To know about statistics visit:
brainly.com/question/16765198
#SPJ4
T/F the textbook suggests that physical determinism and the elitist-populist dilemma are major shortcomings with urban planning. what do these terms mean\
There are three main key terms here - Physical determinism, elitist-populist dilemma, and urban planning. They can be defined as done below.
First, we have at hand the term Physical determination which can be defined as the belief that physical objects and all physical causes can be described using terms and models of the physical sciences.
Secondly, the elitist-populist dilemma is a disagreement between two political factions. elitists are, of course, the socially and economically well-off sections of the population. The populist factions are the ones that cater to the general public and are at odds with the previous group.
Lastly, urban planning is the process of planning for development in urban areas.
Learn to know more about Elitism on
https://brainly.com/question/15011399?referrer=searchResults
#SPJ4
Kevin works as a busboy making $10 per hour and as a theater usher making $7 per hour. Let b be the number of hours he works as a busboy this month, and let u be the number of hours he works as an usher. His goal this month is to earn at least $1400 total. Using the values and variables given, write an inequality describing this.
The inequality for the given situation is 10b+7u≥1400.
Given that, Kevin works as a busboy making $10 per hour and as a theater usher making $7 per hour.
What are inequalities?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
Let b be the number of hours he works as a busboy this month, and let u be the number of hours he works as an usher.
His goal this month is to earn at least $1400 total.
So, the given inequality is 10b+7u≥1400
Therefore, the inequality for the given situation is 10b+7u≥1400.
To learn more about the inequalities visit:
https://brainly.com/question/20383699.
#SPJ1
a die is rolled 20 times and the number of twos that come up is tallied. find the probability of getting the given result. fewer than four twos.
The probability of getting the fewer than four twos is 0.5665.
Explain the Binomial probability distribution?The probability of precisely x successes after n repeated trials is known as a binomial probability, and X only has two possible outcomes.P(X = x) = C(n,x). p ˣ .(1 - p)ⁿ⁻ˣ
Where C(n,x) is the number of distinct combinations of x items drawn from a group of n elements, as determined by the formula below.C(n,x) = n!/x!(n-x)!
For the given question-
p is the likelihood that X will occur.
20 times of a die are rolled;
This indicates that; n = 20.
Six sides, one of which is two:
This indicates that; p = 1/6 = 0.1667.
Probability of having three or fewer twos:
Such is:
P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)
So,
P(X < 4) = C(n,x). p ˣ .(1 - p)ⁿ⁻ˣ
P(X = 0) = C(20,0). 0.1667⁰ .(0.8333)²⁰
P(X = 0) = 0.0261
P(X = 1) = C(20,1). 0.1667¹ .(0.8333)¹⁹
P(X = 1) = 0.1043
P(X = 2) = C(20,2). 0.1667 ² .(0.8333)¹⁸
P(X = 2) = 0.1982
P(X = 3) = C(20,3). 0.1667³ .(0.8333)¹⁷
P(X = 3) = 0.2379
P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)
P(X < 4) = 0.0261 + 0.1043 + 0.1982 + 0.2379
P(X < 4) = 0.5665
Thus, the probability of getting the fewer than four twos is 0.5665.
To know more about the Binomial probability distribution, here
https://brainly.com/question/24756209
#SPJ4
Need help with this question quickly
Answer: 92°
Step-by-step explanation:
The triangle is an isosceles triangle, since two sides are equal. That means the two opposite angles are also equal. Hence m∠N = m∠M = 44°.
Since all interior angles of a triangle adds up to 180°, m∠L can be calculated as:
[tex]180-2(44)=180-88=92[/tex]
