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A researcher conducts an independent-measures study examining the effectiveness of a group exercise program at an...

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Basic Math

A researcher conducts an independent-measures study examiningthe effectiveness of a group exercise program at an assisted livingfacility for elderly adults. One group of residents is selected toparticipate in the program, and a second group serves as a control.After 6 weeks, the researcher assessed physical fitness of eachparticipant.

The data are as follows: Exercise Group: Control Group: n = 15 n= 15 M = 37 M = 34 SS = 230 SS = 160 A. Does the exercise programhave a significant effect on physical fitness? Use p < .05,2-tails test.

B. If there is a significant effect, compute the estimatedCohen’s d to measure the size of the treatment effect.

C. Write a conclusion demonstrating how the outcome of thehypothesis test and the measure of effect size would appear in aresearch report in APA style.

Note: For full credit show all steps of hypothesis testing(i.e., write hypotheses, all computations, the tcritical used forthe decision about H0 and the conclusion in APA reportingformat).

Answer & Explanation Solved by verified expert
3.8 Ratings (514 Votes)
Solution Part A Here we have to use two sample t test for the population mean The null and alternative hypotheses for this test are given as below Null hypothesis H0 Exercise program dont have any significant effect on physical fitness Alternative hypothesis Ha Exercise program have a significant effect on physical fitness H0 1 2 versus Ha 1    See Answer
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