Aaron wanted to know if a new ad promotion would bring more people into his store if he publisheda coupon in a local magazine. He felt that the promotion would be successful if at least 12% ofcustomers who came to the store had the coupon. Out of 175 customers, 15% had the new coupon.Is this evidence that the promotion was successful?What is the appropriate null and alternative hypothesis?O Ho: phat = 0.12 Ha: phat > 0.12O Ho: phat = 0.15 Ha: phat > 0.15Ho: p= 0.12 Ha: p > 0.12O Ho: p= 0.15 Ha: p > 0.15

The provided information is as follows:The population proportion of the promotion would be…

Answered: Aaron wanted to know if a new ad…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Similar questions

You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly more than 0.73. If your null and alternative hypothesis are: Ho: p ≤ 0.73 H₁: p > 0.73 Then the test is: Oright tailed O left tailed two tailed
In a recent study of a random sample of 113 people, 92 reported dreaming in color. In the 1940’s, the proportion of people who reported dreaming in color was 29%. Is there evidence to show that the proportion of people who dream in color is different than the proportion in the 1940’s? What is the p-value for this hypothesis test? In a recent study of a random sample of 113 people, 92 reported dreaming in color. In the 1940’s, the proportion of people who reported dreaming in color was 29%. Is there evidence to show that the proportion of people who dream in color is different than the proportion in the 1940’s? What is the p-value for this hypothesis test? 0.4071 1.21 X 10-34 6.04 x 10-35 12.279 0.8142
A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 71%. Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test.
A fitness course claims that it can improve an individual's physical ability. To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Can it be concluded, from the data, that participation in the physical fitness course resulted in significant improvement? Let d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course)d=(number of sit-ups that can be done after taking the course)−(number of sit-ups that can be done prior to taking the course). Use a significance level of α=0.05α=0.05 for the test. Assume that the numbers of sit-ups are normally distributed for the population both before and after taking the fitness course. Sit-ups before 4242 4242 2323 3232 3030 4242 2525 4747…
A music student wants to know if taking a difficult math course will improve his musical ability. Which of these is the null hypothesis? The student's math scores will improve. There will be no change in math scores. There will be no change in musical ability. The student's musical ability will improve.
Employees from Company A and Company B both receive annual bonuses. What information would you need to test the claim that the difference in annual bonuses is greater than $100 at the 0.05 level of significance? Write out the hypothesis and explain the testing procedure.
8
use a hypothesis test to determine if the proportions are statistically different. A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180high school teachers, 36 were single. Is the proportion of high school teachers who were single greater than theproportion of elementary teachers who were single? Use ΅ = 0.01.
You are management for a chain of department stores. Your analytics team believes that the proportion of months with lost sales for one of your department stores is 25%. You believe it is higher than this, so you gather some data for the last 4 years. You find that for 48 months there were 17 months where there were lost sales. Do you have enough evidence to doubt your analytics team? a) What is the null hypothesis? b) What is the alternative hypothesis? c) What is the claimed population proportion? d) What is the sample proportion (called the test statistic) e) What is the std deviation f) What is the z-value of the test statistic? g) What is the p-value h) What is the conclusion in words
According to a recent study in New York, 15% of shoppers are unfairly being charged sales tax in non-taxable items. Mr. Hypothesis feels this proportion is too low. He tests his belief by conducting a survey of 200 random shoppers. Which of the following is the null hypothesis? a. The percent of shoppers unfairly being charged sales tax on non-taxable items < .15 b. The percent of shoppers unfairly being charged sales tax on non-taxable items > .15 c. The percent of shoppers unfairly being charged sales tax on non-taxable items = .15
"Trydint" bubble-gum company claims that 9 out of 10 people prefer their gum to "Eklypse" and they want to test if this value is different.The null and alternative hypothesis in symbols would be: The null hypothesis in words would be: The proportion of all people that prefer Trydint gum is less than 0.9. The proportion of all people that prefer Trydint gum is 0.9 The average of people that prefer Trydint gum is 0.9. The proportion of all people that prefer Trydint gum is greater than 0.9. The average of people that prefer Trydint gum is not 0.9. The proportion of people in a sample that prefers Trydint gum is 0.9. The proportion of people in a sample that prefer Trydint gum is not 0.9 Based on a sample of 130 people, 87 said they prefer "Trydint" gum to "Eklypse".The point estimate is: (to 3 decimals)The 95 % confidence interval is: to (to 3 decimals)Based on this we: Fail to reject the null hypothesis Reject the null hypothesis
An ANOVA test is conducted of the grades earned by students from a math professor, who taught 3 sections of the same class: morning, afternoon and evening. The decision was to Reject the null hypothesis. Does the test tell which mean is significantly different? yes O no

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