1. What is the P-value 2. What is the 98%, and 95% confidence interval? 3. What

Question

1. What is the P-value

2. What is the 98%, and 95% confidence interval?

3. What is the conclusion?

A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of sample T for Men vs Women women. She randomly selected 53 men and 73 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. StDev 11.4 14.5 SE Mean 53 73 Mean 112.4 118.7 en 90% CI for mu Men-mu Women 10.15, -2.45) T-Test mu Men mu Women (vs) T=-2.73 P= 0.0036 DF = 123 (a) State the null and alternative hypotheses. Which of the following is correct? (b) Identify the P-value and state the researcher's conclusion if the level of significance was = 0.02, what is the P-value? P-value

Explanation / Answer

1 )from given output:

p value =0.0036

2) 98% confidence interval :

for 95% confidence level:

3)

as p vlaue is less than 0.02 level we reject null hypothesis

and conclude thart men has less pulse rate than women,

for 98 % CI & 123 df value of t= 2.3570 margin of error E=t*std error                            = 5.4428 lower confidence bound=mean difference-margin of error = -11.74 Upper confidence bound=mean differnce +margin of error= -0.86

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