Question

A physical therapist wanted to know whether the mean step pulse Two sample T for Men vs Women of men was less than the mean step pulse of women. She N Mean StDev SE Mean randomly selected 55 men and 72 women to participate in the Men 55 112.3 11.6 1.6 study. Each subject was required to step up and down a 6-inch Women 72 118.6 14.2 1.7 platform. The pulse of each subject was then recorded. The 90% Cl for mu Men-mu Women following results were obtained. (-10.12, -2.48) T-Test mu Men = mu Women (vs <) T= -2.75 P = 0.0034 DF = 124 (a) State the null and alternative hypotheses. Which of the following is correct? O A. Ho: M1 = H2; Ha: 41 * H2 OB. Ho: 11 = H2; Hai H4 <H2 O C. Ho: 144 = H2; Ha:My > H2

b) Identify the P-value and state the researcher’s conclusion if the level of significance was a = 0.001. What is the P-value?
P = __

State the researcher’s conclusion. Which of the following is correct?
A. Fail to reject H0, 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 H0, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women.
C. Fail to reject H0, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women.
D. Reject H0, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women.

c) What is the 95% confidence interval for the mean difference in pulse rates of men vs. women?

(__,__) (Use ascending order. Round to two decimal places as needed.
Interpret this result.

A. We are 95% confident that the means are in the confidence interval.
B. We are 95% confident that the mean difference is in the confidence interval.
C. 95% percent of the time the mean difference is in the confidence interval.
D. 95% percent of the time the means are in the confidence interval

Answer 1

99/4/2020 ca) Hoi la la - Hi: option Mixed Co). Сь). T - T2)-(4-1) t =-м т ѕе test Statistic t = -2.75 p=0.0034 af = 124 ao.001 e- yolu e > we fail to reject hull hypothesis option CA). (c) so 95% CI CI: (-10.12. - 2-U8) we are 95% confident that the mean difference is in the Confidence interval. Copthon (6)