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An experiment was conducted by students at The Ohio State University in the fall of 1993...

An experiment was conducted by students at The Ohio State University in the fall of 1993 to explore the nature of the relationship between a person’s heart rate and stepping up and down on steps of various heights. One of the objectives of this study was to see whether the hight of steps matters. Students were randomly assigned to two groups: Low-steps, where the height of steps was 5.75 inches (this group was coded as 0), and High-steps, where the height of steps was 11.5 inches (this group was coded as 1). Student performed the exercise (stepping up and down) for three minutes, after which their heart rates were measured. The investigators had hypothesized that the average heart rate would be different between the two groups. A two-sample t-test was used to analyze the data. The results are shown below. Answer the following questions:Alternatively, the investigators could do the experiment as follows: ask each student to do the exercise with a low-step first, measure his/her heart rate, ask him/her to relax for a 2 while, then repeat the exercise with a high-step, and measure his/her heart rate again. What type of hypothesis testing method you would recommend in this case? Why?

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