A physical therapist wanted to know whether the mean step pulse of men was less
ID: 3043092 • Letter: A
Question
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 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.
N
Mean
StDev
SE Mean
Men
50
112.7
11.5
1.6
Women
72
118.7
14.9
1.8
98% CI for mu Menmu Women (11.70, 0.30)
T-Test =2.51 P=0.0068 DF=118
c) What is the
98% confidence interval for the mean difference in pulse rates of men versus women?
The lower bound is
The upper bound is
N
Mean
StDev
SE Mean
Men
50
112.7
11.5
1.6
Women
72
118.7
14.9
1.8
Explanation / Answer
As per the given output, 99% confidence interval is (-11.70, -0.30)
Hence,
Lower bound = -11.70
Upper bound = -0.30
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