In a 4-week study about the effectiveness of Do you Feel Better? Magnetic Insoles using magnetic insoles to treat plantar heel pain, 51 subjects wore magnetic insoles and 42 subjects wore nonmagnetic insoles. The results are shown at the right. At a 0.07, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (a) Identify the claim and state Ho and Ha Yes 18 INo 33 Nonmagnetic Insoles Yes 16 No 26 - The claim is "the proportion of subjects who feel better with magnetic insoles is | those who feel better with nonmagnetic insoles." Let p, represent the population proportion for the magnetic insoles and p2 represent the population proportions for the nonmagnetic insoles. State Ho and Hg. Choose the correct answer below. O A. Ho: P1 P2 OE. Ho: P1> P2 Hai P1 SP2 OC. Ho: P1 2P2 Ha: P1 OD. z< OA. (c) Find the standardized test statistic. z= (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. O Fail to reject H, because the test statistic is in the rejection region. O Reject Ho because the test statistic is in the rejection region. O Fail to reject Ho because the test statistic is not in the rejection region. O Reject Ho because the test statistic is not in the rejection region. (e) Interpret the decision in the context of the original claim. Choose the correct answer below. O A. At the 7% significance level, there is insufficient evidence to reject the claim. OB. At the 7% significance level, there is insufficient evidence to support the claim. OC. At the 7% significance level, there is sufficient evidence to reject the claim. OD. At the 7% significance level, there is sufficient evidence to support the claim.
In a 4-week study about the effectiveness of Do you Feel Better? Magnetic Insoles using magnetic insoles to treat plantar heel pain, 51 subjects wore magnetic insoles and 42 subjects wore nonmagnetic insoles. The results are shown at the right. At a 0.07, can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through (a) Identify the claim and state Ho and Ha Yes 18 INo 33 Nonmagnetic Insoles Yes 16 No 26 - The claim is "the proportion of subjects who feel better with magnetic insoles is | those who feel better with nonmagnetic insoles." Let p, represent the population proportion for the magnetic insoles and p2 represent the population proportions for the nonmagnetic insoles. State Ho and Hg. Choose the correct answer below. O A. Ho: P1 P2 OE. Ho: P1> P2 Hai P1 SP2 OC. Ho: P1 2P2 Ha: P1 OD. z< OA. (c) Find the standardized test statistic. z= (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. O Fail to reject H, because the test statistic is in the rejection region. O Reject Ho because the test statistic is in the rejection region. O Fail to reject Ho because the test statistic is not in the rejection region. O Reject Ho because the test statistic is not in the rejection region. (e) Interpret the decision in the context of the original claim. Choose the correct answer below. O A. At the 7% significance level, there is insufficient evidence to reject the claim. OB. At the 7% significance level, there is insufficient evidence to support the claim. OC. At the 7% significance level, there is sufficient evidence to reject the claim. OD. At the 7% significance level, there is sufficient evidence to support the claim.
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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In a 4-week study about the effectiveness of using magnetic insoles to treat plantar heelpain,
51
subjects wore magnetic insoles and
42
subjects wore nonmagnetic insoles. The results are shown at the right. At
α=0.07,
can you support the claim that there is a difference in the proportion of subjects who feel better between the two groups? Assume the random samples are independent. Complete parts (a) through |
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