A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of wor randomly selected 50 men and 74 women to participate in the study. Each subject was required to step up and dow 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? O A. Ho: H =H2; H,: Hy> H2 O B. Ho: H "H2i H,: Hy

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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 50 men and 74 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 I for Men vs Women
N
Mean
StDev
SE Mean
Men
Women
95% Cl for mu Men - mu Women
50
112.3
11.7
1.7
74
118.2
14.9
1.7
(- 10.67, - 1.13)
T-Test mu Men = mu Women (vs <)
T= -2.46 P = 0.0076 DF = 119
(a) State the null and alternative hypotheses. Which of the following is correct?
O A. Ho: H1 = H2; HaiHy> H2
O B. Ho: H1 = H2;HiHy <Hz
OC. Ho: H1 = H2 HgiHy # H2
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 50 men and 74 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 I for Men vs Women N Mean StDev SE Mean Men Women 95% Cl for mu Men - mu Women 50 112.3 11.7 1.7 74 118.2 14.9 1.7 (- 10.67, - 1.13) T-Test mu Men = mu Women (vs <) T= -2.46 P = 0.0076 DF = 119 (a) State the null and alternative hypotheses. Which of the following is correct? O A. Ho: H1 = H2; HaiHy> H2 O B. Ho: H1 = H2;HiHy <Hz OC. Ho: H1 = H2 HgiHy # H2
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