1.- You will help to plan for a study at Rutgers on the physiology of excises wi
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1.- You will help to plan for a study at Rutgers on the physiology of excises with student volunteers. The two treatments in the study are two methods of aerobic exercise training call methods A and B to be done at Livingston Campus on Thursday night after 9:30 PM. At the end of a ten-week exercise period each student will undergo a treadmill test for standard respiratory and cardiovascular measurements. After a one-da from students interested in this study. But you can have only 10 students in each study group How would you select the 20 students so that the experimental error minimum? y request for volunteers you receive 39 applications Circle your best recommendation from the statements below: 1-You would select only students with a good health record to participate in both training methods 2- You would interview the students and select the ones that have a good motivation to participate 3- You would 20 students at random 4 -You would select the students so they have similar age and sex characteristics in each groupExplanation / Answer
To select the 20 students so that the experimental error variance could be kept at a minimum is only done by selecting the 20 students sample randomly.
Therefore option 3 would be best . We would select 20 students at random.
option 1, 2 and option 4 will give biased result.
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