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 60 men and 78 women to participate in the study each subject was required to step up and down 6 inch platform the pulse of each subject was then recorded the following results were obtained

n Two sample T for Men vs Women N Mean StDev Men 60 112.2 11.5 Women 78 118.9 14.4 99% CI for mu Men-mu Women (- 12.52, -0.88) T-Test mu Men = mu Women (vs) T= - 3.04 P = 0.0014 DF = 135 SE Mean 1.5 1,6

Answer 1

Test statistic Hypothesis test Hoi lmen - all women Ha: llmen all women Test statistic t = xi-x2 selnit s²lna - -3.04 P-value p-value = 0.0014 DF: 135 Conclusion so we since p-vcelle is less than 2-0.01 reject null hypothesis. option b) There is sufficient evidence to conclude that the mean step pulse of men was less than the free step puise cof women. c) 99% confidence internet. CI= całe-x22) I tarz, dfx SP mit Salma (112.2-118.9) £ 2.6127* 60 78 - (-12-52,-0.88)

the lower bound is -12.52

the upper bound is -0.88

since confidence interval does not contain hypothesize mean so we reject null hypothesis

therefore option d) we are 95% confident that the mean are in the confidence interval.