Marketers believe that 69.6 % of adults in the U.S. own a cell phone. A cell phone manufacturer believes alarger proportion have a cell phone. 31 adults living in the U.S. are surveyed, of which, 6 report that theyhave a cell phone. Using a 0.05 level of significance test the claim.The correct hypotheses would be:Ho:p ≤ 0.696HA P 0.696 (claim)O Ho:p> 0.696HA:P < 0.696 (claim)O Ho: p= 0.696HA:P 0.696 (claim)Since the level of significance is 0.05 the critical value is 1.6453 places)The test statistic is:The p-value is:(round(round to 3 places)

According to the given information in this question We need to apply z test for one population…

Answered: Marketers believe that 69.6 % of adults…

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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When doing hypothesis testing, selecting a value for α is equivalent to... A. reducing the probability of a Type II error. B. the test-statistic value. C. choosing between a one-tailed and two-tailed test. D. choosing the critical value. E. choosing the probability of a Type I error.
An IO psychologist believes that layoffs in at a plant may have increased stress felt by the people who retained their positions. He measures 7 employees before and after the layoffs. The results are below. Use ?=.052????α=.052tail to evaluate the statistics. a. What design was used? b. State the hypotheses in words and symbols c. Show how t was calculated & evaluate the statistic
p5wrong 0.0323 1.848
A random sample of 834 births included 434 boys. Use a 0.01 significance level to test the claim that 50.7% of newborn babies are boys. Do the results support the belief that 50.7% of newborn babies are boys? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho:p=0.507 H:p>0.507 O B. Ho: p=0.507 H1:p<0.507 O C. Ho:p 0.507 H: p=0.507 D. Ho: p=0.507 H1: p#0.507 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.)
With a valid detailed explanation give the correct answer out of the 4 choices.
Consider a drug testing company that provides a test for marijuana usage. Among 335 tested subjects, results from 30 subjects were wrong (either a false positive or a false negative). Use a 0.05 significance level to test the claim that less than 10 percent of the test results are wrong. Identify the null and altenative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.1 H1: p#0.1 O B. Ho: p= 0.1 H: p0.1 O D. Ho: p<0.1 H1: p= 0.1 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed. dentify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test O.A. Fail to reject Ho. There is sufficient evidence to warrant support of the claim that less than 10 percent of the test results are wrong O B. Reject Ho. There is not sufficient evidence to warrant support of the claim…
Suppose 214 subjects are treated with a drug that is used to treat pain and 54 of them developed nausea. Use a 0.10 significance level to test the claim that more than 20% of users develop nausea. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.20 H₁: p>0.20 B. Ho: p=0.20 H₁: p0.20 O C. Ho: p=0.20 H₁: p0.20 H₁: p=0.20
An online poll asked: "Do you believe the Loch Ness monster exists?" Among 20,139 responses, 68% were "yes." Use a 0.10 significance level to test the claim that most people believe that the Loch Ness monster exists. How is the conclusion affected by the fact that Internet users who saw the question could decide whether to respond? www Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.5 H₁: p0.5 H₁: p=0.5 O C. Ho: p=0.5 H₁: p=0.5 O D. Ho-p=0.5 H₁: p>0.5
Past studies have indicated that the percentage of smokers was estimated to be about 33%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 2106 people and found that 656 snoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. a) Identify the nult and alternative hypotheses? Ho: ? v H.:? v b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed Oright-tailed O two-tailed c) Identify the appropriate significance level. d) Calculate your test statistic. (Round your final answer to two decimal places.) e) Calculate your p-value. (Round your final answer to four decimal places.) f) Do you reject the null hypothesis? O We reject the null hypothesis, siñce the p-value is less than the significance level. O We reject the null hypothesis, since the p-value is not less than the significance level. O We do not…
The median price of homes in in a certain city was $228,830. A sample of 200 homes sold in a suburb of the city found 113 homes with sales prices over $228,830 and 87 homes with sales prices under $228,830. Can you conclude that the median price of homes in the suburb differs from the median price of homes in the entir city? Use a = 0.05. State the null and alternative hypotheses. O Ho: Median # 228,830 H₂: Median = 228,830 O Ho: Median 2 228,830 H₂: Median 228,830 O Ho: Median > 228,830 H₂: Median = 228,830 Find the value of the test statistic. (Round your answer to two decimal places.) z = Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. O Do not reject Ho. There is sufficient evidence to conclude that the median price of homes in the suburb differs significantly from $228,830. Do not reject Ho. There is not sufficient evidence to conclude that the median price of homes in the suburb differs significantly from $228,830. O Reject Ho.…
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In a program designed to help patients stop smoking, 173 patients were given sustained care, and 80.9% of them were no longer smoking after one month. Use a 0.05 significance level to test the claim that 80% of patients stop smoking when given sustained care. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho p=0.8 H1 p0.8 O C. Ho p=0.8 H1 p 0.8 O D. Ho p 0.8 Hiip=0.8

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