Question

Score: 0.17 of 1 pt 4 of 14 (12 complete) HW Score: 31.84%, 6.37 of 20 pts Vx 11.3.21 8 Question Help 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 75 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. Two sample T for Men vs Women N Mean StDev SE Mean Men 57 112.2 11.4 1.5 Women 75 118.5 14.9 1.7 99% CI for mu Men -mu Women (- 12.35, -0.25) T-Test mu Men = mu Women (vs) T= -2.75 P = 0.0034 DF = 129 P-value = 0.0034 State the researcher's conclusion. Which of the following is correct? Incorrect: 3 O A 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 OB. 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 O 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 sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women (c) What the 99% confidence 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.) Enter your answer in the edit fields and then click Check Answer.

Answer 1

From the given output, 99% confidence interval will be:

Lower bound = -12.35

Upper bound = -0.25