A software company is trying to decide whether to produce an upgrade of one of its programs. Customers would have to pay $100 for the upgrade. For the upgrade to be profitable, the company needs to sell it to more than 25% of its customers. You contact a random sample of 72 customers and find that 19 would be willing to pay $100 for the upgrade.
a) Do the sample data give good evidence that more than 25% of the company’s customers are willing to purchase the upgrade? Carry out an appropriate test at the α = 0.05 significance level. (You must include all of the steps of the STATE, PLAN, DO, CONCLUDE method to earn full credit.)
b) Describe in context the consequence if we commit a Type II error in this case.
A) The critical value at α = 0.05 will be 1.645 since the critical value does not fall within the rejection region we reject the null hypothesis
B) A type II error occurs when we fail to reject the null hypothesis and a type II error is also known as an error of omission and the consequence of this type of error is that a false negative result is produced.
Given data :
Amount paid for upgrade = $100
Percentage of customers needed = 25% = 0.25
Sample size ( n ) = 72
Number willing to pay $100 = 19
significance level ( α ) = 0.05
A) Prove that 25% of the company's customers are willing to purchase the upgradeNull hypothesis ( H0 ) : p = 0.25
Alternate hypothesis ( H₁ ) : p > 0.25
α = 0.05
Ρ = 19 / 72 = 0.26
To determine the hypothesis to reject or accept
perform Test statistic : Z = [tex]\frac{P - p }{\sqrt{\frac{p(1-p)}{n} } }[/tex]
= ( 0.26 - 0.25 ) / [tex]\sqrt{0.25 * 0.75} / 72[/tex]
= 0.01 / 0.0026
Z- score = 0.499
The critical value at α = 0.05 will be 1.645 since the critical value does not fall within the rejection region we reject the null hypothesis
B) A type II error occurs when we fail to reject the null hypothesis and a type II error is also known as an error of omission and the consequence of this type of error is that a false negative result is produced.
Learn more about Type II error : https://brainly.com/question/7278657?section=related_q
I am in Y10 I have a month and 2 weeks to revise for my exams is it enough time?
P.S: I have 6 subjects to revise for?
Answer:
yes it is enough 1 month for six subject but revise 1 subject for 3 hour in the morning and in the evening
Answer:
yes you have enough time you just have to set up a time table for each subject on don't only use one resource u have to use different resources
1) Benjamin likes apple juice and orange juice equally well. If the apple crops are destroyed in a storm, how will this affect the demand of orange juice?
a) The demand of orange juice will increase
b) The quantity demanded of orange juice will increase
2) The price of shoes increases from $45 to $55. How does this affect the demand of shoes?
a) Demand will decrease
b) Quantity demanded will decrease
Answer:
a and a i thnk, but not sure
Explanation:
Which of the following is an example of the self fulfilling prophecy?
Answer:
1example. Adele is praised by her math teacher adn performs better on her next test.
2 example. self-fulfilling prophecy is an unbased expectation (either positive or negative) of one person towards another person (or event) that leads this person to act or behave accordingly. In this case, a dyslexic person can read if he/she makes an extra effort to do so. However, his/her belief someone's false prophecy can lead him/her to become illiterate.
The example of the self fulfilling prophecy is:
Jill thinks her daughter is not a very good reader and doesn't spend much time reading to her. As a result her daughter falls behind in reading at school.What is self fulfilling prophecy?Self-fulfilling prophecy is known to be called a interpersonal expectancy effect as it tells the scenario where an individual or a group's outcome for the behavior of a given person or group act to bring about the prophesied or expected outcome.
Therefore, The best example of the self fulfilling prophecy is:
Jill thinks her daughter is not a very good reader and doesn't spend much time reading to her. As a result her daughter falls behind in reading at school.See options below
a.) A teacher believes that boys are better at math than girls, but boys in his class do worse than girls in math
b.) Bob thinks that members of the Alpha Phi sorority are unfriendly and snobby. Whenever he meets members of this sorority, they are friendly towards him.
c.) Sarah is worried that her son is not gifted in music, but he does better at this piano lessons than she expected
d.) Jill thinks her daughter is not a very good reader and doesn't spend much time reading to her. As a result her daughter falls behind in reading at school.
Learn ore about self fulfilling prophecy from
https://brainly.com/question/25886182
#SPJ6
Which of the following statements is NOT correct? (false statement)Which of the following statements is NOT correct? (false statement)Cardiac muscle is found only in the heartSkeletal muscle is attached to bonesSmooth muscle is found in the digestive systemSmooth muscle is found only in the heart
Answer:
Smooth muscle is found only in the heart is incorrect
Explanation:
Cardiac muscle LITERALLY means heart and it is only found in the heart.
Smooth muscle makes up most of your digestive organs so it can't only be in the heart
and skeletal muscle does attatch to your bones to help support your structure
Reset Janet’s loan back to $3500, 24% interest, but pretend she decided from the start that her pay-off goal was 4 years instead of 2. What is Janet’s new monthly payment?
Using simple interest, it is fond that Janet’s new monthly payment is of $142.92.
Simple InterestSimple interest works like a simple linear function, in which the amount increases proportionally with the interest rate.
The amount of money after t years in simple interest is modeled by:
[tex]A(t) = A(0)(1 + rt)[/tex]
In which:
A(0) is the initial amount.r is the interest rate, as a decimal.In this problem:
The amount is of $3500, hence A(0) = 3500.The rate is of r = 0.24.She pays in 4 years, hence t = 4.The total amount paid is of:
[tex]A(t) = A(0)(1 + rt)[/tex]
[tex]A(4) = 3500[1 + (0.24)(4)][/tex]
[tex]A(4) = 6860[/tex]
She pays in 4 x 12 = 48 months, hence the monthly payment is of:
$6860/48 = $142.92.
You can learn more about simple interest at https://brainly.com/question/25296782
If Congress passes a law that conflicts with the Constitution, which one are we required to follow: the law or the Constitution?
Answer:
The constitution
Explanation:
the constitution is the whole basis for our rights and freedoms as humans. Congress SHOULDN'T ever pass anything that goes against it, but if they were to, you always follow thee constitution unless they want to work on amending it.
describe one way the passage reflects a difference between the political or economic policies of egypt and china in the period 1750-1900
It is important to look out for the context clues to understand the difference between the political policies of Egypt and China in the period.
What are context clues?Your information is incomplete as the passage isn't given. Therefore, an overview will be given.
It should be noted context clues simply mean the hints that are given in a literary work.
In this case, it's important to understand the political or economic policies of Egypt and China in the period. It's also important to figure out the similarities and differences between them.
Learn more about context clues on:
https://brainly.com/question/24750804
