50 POINTS!!! Type the correct answer in each box. Use numerals instead of words.
A publishing company conducted a survey asking readers whether they use e-readers. Of the 3,000 readers surveyed, 1,954 said they read
books on an e-reader.
Use this information to complete the statement. Round your answers to the nearest hundredth.
The approximate sample proportion is
which means that
% of the readers surveyed do not use e-readers.
Answers
Answer:
The correct answer to this is 200 and 34.90%
Step-by-step explanation:
To get the solution, we are looking for, we need to point out what we know.
1. We assume, that the number 3000 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 3000, so we can write it down as 100%=3000.
4. We know, that x% equals 1046 of the output value, so we can write it down as x%=1046.
5. Now we have two simple equations:
1) 100%=3000
2) x%=1046
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=3000/1046
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 1046 is what percent of 3000
100%/x%=3000/1046
(100/x)*x=(3000/1046)*x - we multiply both sides of the equation by x
100=2.868068833652*x - we divide both sides of the equation by (2.868068833652) to get x
100/2.868068833652=x
34.866666666667=x
x=34.866666666667
now we have:
1046 is 34.866666666667% of 3000
Sample proportion = 0.65
And, The percentage of the sample proportion = 65%
The percentage of the readers surveyed do not use e-readers = 35%
What is Proportional?Any relationship that is always in the same ratio and quantity which vary directly with each other is called the proportional.
Given sample size is,
'n' =3000
Of the 3,000 readers surveyed, 1,954 said they read books on an e-reader.
Hence, The probability that The readers surveyed use e-readers sample proportion is,
p = 1954 / 3000
p = 0.6513
Hence, The percentage of the sample proportion is, 65%
And, The readers surveyed do not use e-readers is,
q = 1 - p
q = 1 - 0.651
q = 0.349
Thus, Sample proportion = 0.65
And, The percentage of the sample proportion = 65%
The percentage of the readers surveyed do not use e-readers = 35%
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Related Questions
HELP ME PLEASEEEE :)
Answers
Answer:
I believe it to be C
Step-by-step explanation:
HELPPSOJSUSHHWYAYSYYSYYEHWHWHS
Answers
Answer:
1. (-4, 1)
2. I substituted (y = x + 5) into (3x + y = -11) first before substituting the value of x into (y = x + 5) to find the value of y.
Step-by-step explanation:
Substitute y = x + 5 into 3x + y = -11:
3x + y = -11
3x + x + 5 = -11
4x + 5 = -11
4x = -11 - 5
= -16
x = -16 ÷ 4
x = -4
Substitute x = 4 into y = x + 5:
y = x + 5
y = -4 + 5
y = 1
A coordinate point is written like this: (x, y)
Thus, the final answer is: (-4, 1)
Ben has 9 trading cards. Tyler has 36 trading cards, which is 4 times as many trading cards as Ben.
Drag numbers and symbols to correctly complete the equation to represent this situation.
Answers
Answer: I would need a picture of the exact set up of the question but I think it would go.
T=4b
B= 9
Step-by-step explanation:
12 ft. 16 ft Find the area of the figure above.
Answers
Austin has $75 to spend on sporting goods. He wants to buy a soccer ball for $12 and spend the rest of the money on soccer shorts. Each pair of soccer shorts costs$19. Which inequality can be used to find s, the number of pairs of soccer shorts he can buy?
Answers
Answer:
4
Step-by-step explanation:
Answer:
4 have a good dayStep-by-step explanation:
What is the population density of 13 lillies living in an area of 6 meters (length) and 4 meters (width)?
Answers
Answer:
0.54 lillies per square meter.
Step-by-step explanation:
First we calculate the area:
Area = length * width
Area = 6 m * 4 m = 24 m²
The we divide the population of lillies (13) by the area, to calculate the population density:
13 lillies / 24 m² = 0.54 lillies/m²
So the population density is 0.54 lillies per square meter.
Sarah’s was given 12 cups of bird seed for 3 bird feeders. She filled the bird feeders for a whole week. How many cups of seeds did sarah put in each bird feeder each day?
Answers
Answer:
1.7 everyday
Step-by-step explanation:
Which of the following graphs best represents the solution to the following systems of equations?
3x+5y=10
Answers
3
x
+
5
y
=
10
Step 1: Add -5y to both sides.
3
x
+
5
y
+
−
5
y
=
10
+
−
5
y
3
x
=
−
5
y
+
10
Step 2: Divide both sides by 3.
3
x
3
=
−
5
y
+
10
3
x
=
−
5
3
y
+
10
3
Answer:
x
=
−
5
3
y
+
10
3
PLEASE HELP!!
multiplying complex numbers standard form
3i(-5+i)
Answers
Answer:
-3-15i
Step-by-step explanation:
3i*-5 = -15i
3i*i = 3i^2 (i^2 = -1)
= -3-15i
Carissa has a fish tank that can hold up to 50 gallons of water but it is leaking at a constant rate. When Carissa first notices the leak, the tank has 40 gallons of water. Two hours later the tank has 30 gallons. At what rate is the water leaking? Use a signed number, and include the unit of measurement in your answer.
Answers
Answer:
for every 2 hour 10 gallons leak out
Step-by-step explanation:
The high temperatures (in degrees Fahrenheit) of a random sample of 5 small towns are: 99.6 99.7 97.9 98.6 97.7 Assume high temperatures are normally distributed. Based on this data, find the 99% confidence interval of the mean high temperature of towns. Enter your answer as an open-interval (i.e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place).
Answers
Answer: (97.63, 99.77)
Step-by-step explanation:
Given the data:
99.6 99.7 97.9 98.6 97.7
Using calculator, we can obtain the mean and standard deviation of the sample data:
Mean(m) = 98.7
Standard deviation = 0.93
Sample size (n) = 5
Using the relation to find confidence interval :
Mean ± Zcrit * (s/√n)
Zcrit at 99% = 2.576
98.7 ± 2.576 * (0.93 / √5)
Lower limit : 98.7 - (2.576 * 0.4159086) = 97.6286194464 = 97.63 ( 1 decimal place)
Upper limit : 98.7 + (2.576 * 0.4159086) = 99.7713805536 = 99.77 ( 1 decimal place)
(97.6, 99.8)
Defects in computer hard-drives will usually render the entire computer worthless. For a particular model, the percent defective in the past has been 1%. If a sample size of 400 is taken, what would the 95.5% lower control chart limit be?
Answers
Answer:
0.00005
Step-by-step explanation:
We have the average fraction defective as p = 1%
= 0.01
N = 100
Then 95.5% deviation = 2σ
From there we have,
σ = √p*(1-p)/n
When we input these values, into the formula, we will have
σ = √0.01(1-0.01)/100
= √0.01(0.99)/100
= √0.000099
= 0.00995
The LCL = p - 2σ
= 0.01 - 0.00995
= 0.00005
lower control chart limit be is 0.00005
The 95.5% lower control chart limit be is 0.0005.
Given,
The average fraction percent in the past defective as p = 1% = 0.01
Sample size N = 400
Then ,
According to the question ,
95.5% deviation = 2x
We have,
x = [tex]\frac{\sqrt{p (1-p)} }{n}[/tex]
We put these values, into the formula,
x = [tex]\frac{\sqrt{0.01 ( 1 - 0.01) } }{400}[/tex]
= [tex]= \frac{\sqrt{(0.01) (0.99)} }{400}[/tex]
= [tex]\frac{0.99}{400}[/tex]
= 0.0000245
The LCL = p - 2x
= 0.01 - 0.0000245
= 0.00005
The Lower control chart limit be is 0.00005
For the more information about Standard deviation click the link given below.
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The ratio of black marbles to red marbles is 3:2. If there are a total of 25 marbles in a bag,
how
many
black marbles are in the bag?
Answers
Answer:
15 black marbles
Step-by-step explanation:
So its. A ratio (basically a fraction)
3/2
we add them up so we know how much marbles but not which kind
so we get 5
now we know for every 5 batches there is 3 black and 2 red
so we divide 25/5 to get 5
now we know there are 5, 5 batches of black ad red marbles.
now black is 3 of them so we multiply 5(3) which is 15
Now red is 2 of them so we multiply 5(2). Which is 10
now to check, if we add them up, they equal to 25 which is correct.
basically add the fraction, divide that by the original number, time the quotient by each number in the fraction.
Answer:
There are a total of 15 black marbles in the bag.
Step-by-step explanation:
Well, we know that for every 3 black marbles, there are 2 red marbles. In order to solve this problem, we just need to keep adding equivalent ratios with a proportional relationship until the sum of both numbers is 25.
3:2, 6:4, 9:6, 12:8, 15:10
Since 15 + 10 = 25, we can stop here.
Since the number in front of the colon is the amount of black marbles, then there are a total of 15 black marbles in the bag.
Hope this helps! :D
need this by today! Pls help! Im desperate! I will give correct anwser brainliest!
Answers
How the grinch stole Christmas- 25%
Rudolph the red nosed reindeer- 37.5%
Frosty the snowman- 6.25%
The weight, X, of cherry tomatoes selected at random from a very large bin at the local supermarket follows a Normal distribution with mean 3 oz. and standard deviation 2 oz. Suppose we pick 8 cherry tomatoes from the bin at random (independently) and put them in our bag. What is the probability that exactly 5 of the 8 cherry tomatoes weigh less than 4 oz (rounded to the nearest 0.01)?
Answers
Answer: the probability that exactly 5 of the 8 cherry tomatoes weigh less than 4 oz is 0.05
Step-by-step explanation:
Given that;
X has normal distribution has mean µ = 3
standard deviation σ = 2
now
P( x< 4) = P( (x-µ)/σ /(3-4)/5)
= P( z < -0.5 )
= 0.3085 {from the z-table}
X has binomial distribution with n = 8 and p = 0.3085
so P(x=5)
P(x=5) = 8C₅(0.3085)⁵ (1 - 0.3085)⁸⁻⁵
= 0.0517 ≈ 0.05
Therefore the probability that exactly 5 of the 8 cherry tomatoes weigh less than 4 oz is 0.05
The ratio of males to females at a basketball game was 5:7. Suppose there were 45 males at the basketball game. How many people were at the game altogether?
Answers
Answer:
108 in total
Step-by-step explanation:
there's 45 males and 63 females
Answer:
108
Step-by-step explanation:
If it's 5:7 and there are 45 males. You divide 45 by 9 and get 5. Meaning if you multiply 7 by 9 you get 63. 63+45=108
Shannon spent the day at the mall. She spent $5.75 on earrings and 4 times that amount on a shirt. After shopping, she came home with $7.75 in her wallet. How much money did she take to the mall originally?
A.
$21.00
B.
$28.75
C.
$30.75
D.
$36.50
Answers
The radius of a right circular cone is increasing at a rate of 1.4 in/s while its height is decreasing at a rate of 2.8 in/s. At what rate is the volume of the cone changing when the radius is 138 in. and the height is 143 in.?
Answers
Answer:
34191.7πin³/sec
Step-by-step explanation:
Volume of circular come = 1/3pi x r² x h
When we differentiate this formula we have
dv/dt = 1/3π[r²dh/dt + 2rhdr/dt]
We have the following information
r = 138
H = 143 inch
dr/dt = 1.4
dh/dt = -2.8
When we plug into the formula
1/3π[130² x -2.8 + 2x138x143x1.4]
= 34191.7πin³/sec
an ancient atifact is 4 time older then an anitque book
Answers
Find the measure of angle A.
Answers
Answer:
30 degrees
Step-by-step explanation:
Keep this in mind, ALL triangles must equal 180 degrees.
This is an acute triangle, hence one of the angles is 90 degrees. To find the other two angles, we must solve for x. Since we know the sum of all angles in this triangle must equal 180 degrees, we know for setting up our equation, all the angles should equal 180.
[tex]90 + (x+37) + (x+67) = 180\\[/tex]
Now solve for x by isolating x
[tex]2x + 194 = 180\\2x=-14\\x=-7[/tex]
Our x is -7, now that we know that the numerical value of x is -7, replace x with -7 for angle A.
-7 + 37 = 30
<A is 30 degrees.
Check your work
Plug in -7 where you see x.
[tex]90 + (x+37) + (x+67) = 180\\90 + (-7+37) + (-7+67) = 180\\90 + 30 + 60 = 180\\180 = 180[/tex]
Turns out this was a 30-60-90 triangle. ✅
Could someone please help me with this?
Answers
Answer:
fhhrjeowospwpwwpwpwpwp
you have to insert the x and y values for x and y.
So, (-2,-4) put into y=3x+2 is -4=3(-2)+2
then solve to see if it is right...
-4=3(-2)+2
-4=-6+2
-4=-4
Please help need this ASAP!!
Answers
Answer:
40.5
Step-by-step explanation:
If malcom is 5.5 feet tall and casts a 7 foot shadow, the shadow gains an extra 1.5 feet. So for the building, if the shadow is 1.5 feet taller, subtract 1.5 from 42 to get 40.5 (correct me if i'm wrong)
Online photos: A poll surveyed internet users and found that of them had posted a photo or video online. Can you conclude that less than half of internet users have posted photos or videos online? Use the α 0.01 level of significance and the P-value method with the TI-84 calculator.
1. State the appropriate null and alternate hypotheses.
2. Compute the P-value.
Answers
Complete question :
Online photos: A poll surveyed 1765 internet users and found that 865 of them had posted a photo or video online. Can you conclude that less than half of internet users have posted photos or videos online? Use the α 0.01 level of significance and the P-value method with the TI-84 calculator.
1. State the appropriate null and alternate hypotheses.
2. Compute the P-value.
Answer:
H0 : p = 0.5
H1 : p < 0.5
P value = 0.200454
Step-by-step explanation:
Given that :
Claim : Less than half internet users have posted photos or videos online.
Sample Proportion (p) = 865 / 1765 = 0.4900
The null hypothesis : H0 : p = 0.5 (that is half of internet users have posted photos online.
The alternative hypothesis : H1 : p < 0.5 (that is less than half of internet users have posted photo or video ;
P = 0.5
q = 1 - 0.5 = 0.5
The test statistic :
Z = p - p0 / sqrt(p0 * (q/n))
Z = (0.49 - 0.5) / sqrt(0.5 * (0.5/1765))
Z = - 0.01 / sqrt(0.5 *0.0002832)
Z = - 0.01 / sqrt(0.0001416)
Z = - 0.01 / 0.0119013
Z = - 0.8402443
The corresponding p value from the z statistic score at α = 0.01
= 0.200454
There are 4 birds and 6 snakes. What is the ratio of birds to snacks?
Answers
Answer:
2:3
Step-by-step explanation
To get this you find the greatest common denominator (2) and divide both numbers by it. 4 divided by 2 is 2 and 6 divided by 2 is 3.
van someone help me with this
Answers
Answer:
107
Step-by-step explanation:
resuelve los siguientes sistemas de ecuaciones lineales utilizando el método de igualación
SI ME AYUDAN CON UNA CAPTURA PORFA !
Answers
Answer:
A
Step-by-step explanation:
The solution is solved using Equalization methods. Hence the answer to A is such that y= -2 and x = 12
What is the Equalization method?The Equalization method refers to a method whereby a quantity that is unknown in two equations is isolated and equated.
The solution to equation one is thus given below:
[tex]\{ \mathrm{}_{x + 3y = 6}^{2x + 5y = 16}[/tex]
Step I - Isolate any two variables.
In this case, we will isolate x. Hence we will have:
2x + 5y = 16 → x = (16 - 5y)/2 .............................1
x + 3y = 6 → x = (7 - 3y) .............................2
From 1 and 2 above, we can see that both equations are now equal to x, Using the principle of transitivity, we can state that:
Since both formulas are now equal to x, therefore:
(16 - 5y)/2 = (7 - 3y)...............................3
Simplifying and collecting like terms from 3 above, we now have:
(16 - 5y) = 2(7 - 3y)
that is 16 - 5y = 14-6y
This will give us:
6y-5y= 14-16
y = -2
Step II - Substitute Y into any of the original equations to get x.
Recall that we have x + 3y = 6
Therefore, x = 6-3y
That is x = 6-3(-2)
x = 6 + 6 = 12
Hence, for Equation A, x = 12; y = -2
Equation B:
Using the same method, we arrive at: x =45; and y = -3
Equation C:
Using the same method, we arrive at: x = 2; and y = 0
Learn more about Equalization Method at:
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HELP ASAP!!!!! BRAINLIEST
Answers
Answer:
the t should go by the the end of the 1450
Step-by-step explanation:
Help! It's geometry. :) 35 points.
Answers
Answer:
g = 21
h = 8
Step-by-step explanation:
3g + 5 + 6g - 14 = 180 (since they are adjacent angles and will equal 180)
Simplify to get g = 21.
Substitute 21 for g in 3g + 5 and set that equal to 9h - 4 and solve for h to get 8 (since they are opposite angles and will equal each other)
Answer:g=21 h = 8
Step-by-step explanation:
That's a rhombus supposedly so the opposite angles are congruent.
This means 9h-4=3g+5 Also the opposite sides of a rhombus add up to 180 degrees, so 3g+5+6g-14=180
9g=,189 g = 21
now plug this into the first equation
9h-4=3(21)+5
9h-4=63+5
9h=72
h=8
A 20ft ladder is leaning against a house. The bottom of the ladder is 3 ft from the house. To the nearest tenth of a foot, about how high does the top of the ladder reach?
Answers
Answer: 19.8 ft
Step-by-step explanation:
Use the Pythagorean Theorem formula to solve for how high the top of the ladder reach.
The formula says a^2 + b^2 = c^2
Where a and b are the two legs and C is the hypotenuse.
In this situation, the hypotenuse will be length of the ladder , and either a or b will be the length of the ladder from the building or the length of how long the ladder.
a will be 3 , and c will be 20. Input in the values into the formula and solve for b.
3^2 + b^2 = 20^2
9 + b^2 = 400
-9 -9
b^2 = 391
b = [tex]\sqrt{391}[/tex]
b = 19.77371 round to the nearest tenth is , 19.8
A teacher's age is 6 years greater than 2 times a student's age. A principal's age is 10 years greater than 3 times
the student's age.
If x represents the student's age in years, which expression represents how many years older the principal is than
the teacher?
4x + 1
B
x + 4
c
4x + 5
DX + 16
Answers
Answer:
b. x + 4
Solution:
Student's age = x
Teacher's age = 6 + 2x
Principal's age = 10 + 3x
Difference in the age of the teacher and principal
(10 + 3x) - (6 + 2x)
= 10 + 3x - 6 - 2x
= (10 - 6) + (3x - 2x)
= 4 + x
