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A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 57 men and 72 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. (a) State the null and alternative hypotheses. Which of the following is correct? OA. Ho: H₁ H₂ Ha: H₁ H₂ B. Ho: H₁ H₂ Ha: H₁ H₂ c. Ho: H₁ H₂ Ha: H₁ H₂ (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value = 0.0018 State the researcher's conclusion. Which of the following is correct? (c) What is the 90% confidence interval for the mean difference in pulse rates of men versus women? N 57 72 The lower bound is The upper bound is (Round to two decimal places as needed.) Two sample T for Men vs Women StDev Mean 112.1 118.7 Men Women 90% CI for mu Men-mu Women (-10.30, -2.90) T-Test mu Men = mu Women (vs<) T= -2.97 P=0.0018 DF = 126 A. Reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women OB. Fail to reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women O C. Reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women O D. Fail to reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women 11.1 14.1 SE Mean 1.5 1.7

A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 57 men and 72 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. (a) State the null and alternative hypotheses. Which of the following is correct? OA. Ho: H₁ H₂ Ha: H₁ H₂ B. Ho: H₁ H₂ Ha: H₁ H₂ c. Ho: H₁ H₂ Ha: H₁ H₂ (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value = 0.0018 State the researcher's conclusion. Which of the following is correct? (c) What is the 90% confidence interval for the mean difference in pulse rates of men versus women? N 57 72 The lower bound is The upper bound is (Round to two decimal places as needed.) Two sample T for Men vs Women StDev Mean 112.1 118.7 Men Women 90% CI for mu Men-mu Women (-10.30, -2.90) T-Test mu Men = mu Women (vs<) T= -2.97 P=0.0018 DF = 126 A. Reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women OB. Fail to reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women O C. Reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women O D. Fail to reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women 11.1 14.1 SE Mean 1.5 1.7

MATLAB: An Introduction with Applications
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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A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 57 men and 72 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. (a) State the null and alternative hypotheses. Which of the following is correct? A. Ho: H₁ H₂; Ha: H1 H₂ B. Ho H = H2i Hai H1<H2 C. Ho: H₁ = H₂; H₂: H₁ H₂ P-value = 0.0018 (b) Identify the P-value and state the researcher's conclusion if the level of significance was α=0.01. What is the P-value? State the researcher's conclusion. Which of the following is correct? (c) What is the 90% confidence interval for the mean difference in pulse rates of men versus women? The lower bound is The upper bound is (Round to two decimal places as needed.) N 57 72 90% CI for mu Men -mu Women (-10.30, -2.90) T-Test mu Men = mu Women (vs <) T= 2.97 P = 0.0018 DF = 126 Men Women A. Reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women B. Fail to reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women C. Reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women D. Fail to reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women F Two sample T for Men vs Women Mean StDev 11.1 112.1 118.7 14.1 SE Mean 1.5 1.7
Transcribed Image Text:A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 57 men and 72 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. (a) State the null and alternative hypotheses. Which of the following is correct? A. Ho: H₁ H₂; Ha: H1 H₂ B. Ho H = H2i Hai H1<H2 C. Ho: H₁ = H₂; H₂: H₁ H₂ P-value = 0.0018 (b) Identify the P-value and state the researcher's conclusion if the level of significance was α=0.01. What is the P-value? State the researcher's conclusion. Which of the following is correct? (c) What is the 90% confidence interval for the mean difference in pulse rates of men versus women? The lower bound is The upper bound is (Round to two decimal places as needed.) N 57 72 90% CI for mu Men -mu Women (-10.30, -2.90) T-Test mu Men = mu Women (vs <) T= 2.97 P = 0.0018 DF = 126 Men Women A. Reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women B. Fail to reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women C. Reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women D. Fail to reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women F Two sample T for Men vs Women Mean StDev 11.1 112.1 118.7 14.1 SE Mean 1.5 1.7
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