A physical therapist wanted to know whether the mean step pulse of men was less than the mean Two sample T for Men vs Wo

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A Physical Therapist Wanted To Know Whether The Mean Step Pulse Of Men Was Less Than The Mean Two Sample T For Men Vs Wo 1 (49.19 KiB) Viewed 88 times

A physical therapist wanted to know whether the mean step pulse of men was less than the mean Two sample T for Men vs Women step pulse of women. She randomly selected 55 men and 70 women to participate in the study. Each N Mean StDev SE Mean subject was required to step up and down a 6-inch platform. The pulse of each subject was then Men 55 112.9 11.7 1.6 recorded. The following results were obtained. Women 70 118.4 14.6 1.7 95% CI for mu Men -mu Women (-10.19, -0.81) T-Test mu Men = mu Women (vs <) T = -2.34 P = 0.0105 DF = 122
(a) State the null and alternative hypotheses. Which of the following is correct?
A. Ho: M1 = H2; Ha:M1 7M2 B. Ho:P1 = M2; Ha: M1 <H2 C. Ho: M1 = M2; Ha: 41 > 42
(b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.02. What is the P-value?
State the researcher's conclusion. Which of the following is correct?
A. 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 B. 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. 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 D. 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
(C) What is the 99% confidence interval for the mean difference in pulse rates of men versus women?
The lower bound is The upper bound is
A. 99% percent of the time the means are in the confidence interval. B. We are 99% confident that the mean difference is in the confidence interva C. 99% percent of the time the mean difference is in the confidence interval. D. We are 99% confident that the means are in the confidence interval.