A random sample of 777 college freshman found that 209 bought most of their textbooks from the college'sbookstore. A random sample of 763 college seniors found that 217 bought their textbooks from the college'sbookstore. You wish to test the claim that the proportion of all ffeshman that purchase most of theirtextbooks from the college's b0okstore is not equal to the proportion of all seniors at a significance level ofa = 0.10. ASsume the freshman are groúp one and seniors are group two.What are the correct hypotheses?Hg: Select an answerv?V Select an answervH Select an answerv ?V Select an answervCheck Answer

Answered: Image /qna-images/answer/f74410a0-6340-4801-bc56-c9ce1bf95163.jpg

Answered: A random sample of 777 college freshman…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A drug manufacturer claims that fewer than 10% of patients who take its new drug for treating Alzheimer’s disease will experience nausea. In a random sample of 250 patients, 23 experienced nausea. Perform a significance test at the 5% significance level to test this claim.
In a recent year, the SF Giants won 47 of 81 home games and they won 37 of 81 away games. Use a 0.05 significance level to test the claim that the proportion of wins for home games is greater than the proportion of wins for away games. Does there appear to be a home-field advantage?
In a winter of an epidemic ﬂu, the parents of 2000 babies were surveyed by researchers at a well-known pharmaceutical company to determine if the company’s new medicine was effective after two days. Among 120 babies who had the ﬂu and were given the medicine, 29 were cured within two days. Among 280 babies who had the ﬂu but were not given the medicine, 56 recovered within two days. Is there any signiﬁcant indication that supports the company’s claim of the effectiveness of the medicine? Use a significance level of 0.10
In a winter of an epidemic ﬂu, the parents of 2000 babies were surveyed by researchers at a well-known pharmaceutical company to determine if the company’s new medicine was effective after two days. Among 120 babies who had the ﬂu and were given the medicine, 29 were cured within two days. Among 280 babies who had the ﬂu but were not given the medicine, 56 recovered within two days. Is there any signiﬁcant indication that supports the company’s claim of the effectiveness of the medicine? Use a significance level of 0.10 A. What type of Hypothesis Testing should be used? B. What are the null and alternative hypothesis? C. What are the significance level and type of test? D. What is the critical value? E. What is the standardized test statistic? F. What is the Statistical Decision?
In a study on sodium-restricted diets, the researchers observed 50 patients with hypertension. Among these, 22 were on sodium-restricted diets. Of 200 patients without hypertension, 54 were on sodium-restricted diets. The researchers were curious to find out whether they can conclude that, in the sampled population, the proportion of patients on sodium-restricted diets is higher among patients with hypertension (p1) than among patients without hypertension (p2). Use a significance level of α = 0.05 for the test. The output of the analysis is given below. Z Test for Two Proportions Hypertension No hypertension Sample Proportion xxx xxx Number of Observations 50 200 Ho: xxx Ha: xxx Z* xxx P[Z > Z*] XXXXX Z Critical, a = 0.05 1.644854 1. Assume the calculated test statistic turns out to be 3.54. Then, the conclusion is that we should reject Ho. 2. What is the null…
In a survey, 716 out of 1132 randomly selected adults in the United States said that they use cell phones while driving. a) Use a 0.02 significance level when testing the claim that the proportion of adults who use cell phones while driving is different than 70%. b) What does the conclusion mean?
A study was performed to determine the percentage of people who wear life vests while out on the water. A researcher believed that the percentage was different for those who rode jet skis compared to those who were in boats. Out of 500500 randomly selected people who rode a jet ski, 85%85% wore life vests. Out of 250250 randomly selected boaters, 90.4%90.4% wore life vests. Using a 0.050.05 level of significance, test the claim that the proportion of people who wear life vests while riding a jet ski is not the same as the proportion of people who wear life vests while riding in a boat. Let jet skiers be Population 1 and let boaters be Population 2. Step 1 of 3 : State the null and alternative hypotheses for the test. Fill in the blank below. H0Ha: p1=p2: p1⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯p2 Step 2 of 3 : Compute the value of the test statistic. Round your answer to two decimal places. 3) draw a conclusion and form a decision (word it like "we fail to reject the null hypothesis and…
A health organization asserts that the prevalence of smoking among male adults 18 years or older in the United States exceeds the prevalence of smoking among female adults 18 years or older. In a random survey of 1,000 US adults 18 years or older (516 male, 484 female), 129 of male respondents identified themselves as smokers, and 87 of female respondents identified themselves as smokers. At the 5% significance level, do the data provide sufficient evidence to conclude that in US adults 18 years or older, proportion of male smokers exceeds proportion of female smokers? *(no use EXCEL)
A Gallup poll to survey the top concerns of Americans was conducted. Suppose that 725725 women and 745745 men were independently and randomly selected, and that 406406 women and 354354 men chose the state of the economy as their biggest concern. Can we conclude that the proportion of women ( p1p1 ), choosing the state of the economy as their biggest concern, exceeds the proportion of men ( p2p2 )? Use a significance level of α=0.05α=0.05 for the test. Step 2 of 6 : Find the values of the two sample proportions, pˆ1p^1 and pˆ2p^2. Round your answers to three decimal places.
Suppose a poll is taken that shows that 281 out of 500 randomly selected, independent people believe the rich should pay more taxes than they do. Test the hypothesis that a majority (more than 50%) believe the rich should pay more taxes than they do. Use a significance level of 0.05.
The percentage of physicians who are women is 32.4%. In a survey of physicians employed by a large university health system, 50 out of 120 randomly selected physicians were women. At the 5% significance level, is there sufficient evidence to conclude that the proportion of women physicians at the university health system exceeds 32.4%?
A study was performed to determine the percentage of people who wear life vests while out on the water. A researcher believed that the percentage was different for those who rode jet skis compared to those who were in boats. Out of 500 randomly selected people who rode a jet ski, 88.6 % wore life vests. Out of 400 randomly selected boaters, 93.5 % wore life vests. Using a 0.10 level of significance, test the claim that the proportion of people who wear life vests while riding a jet ski is not th same as the proportion of people who wear life vests while riding in a boat. Let jet skiers be Population 1 and let boaters be Population 2. Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS