SOLUTION: Aerobic exercise is good for the heart. A group of college students interested in the effect of stepping exercises on heart rate conducted an experiment in which subjects were rand

Click here to see ALL problems on Probability-and-statistics

Question 1113730: Aerobic exercise is good for the heart. A group of college students interested in the effect of stepping exercises on heart rate conducted an experiment in which subjects were randomly assigned to a stepping exercise on either a 5.75-in. step (coded 0) or an 11.50-in. step (coded 1). Each subject started with a resting heart rate and performed the exercise for 3 minutes, at which time his or her exercise heart rate was recorded.
a. You want to test whether the higher step resulted in a larger mean gain in heart rate than did the lower step. Is this a one-sample test or a two-sample test? Explain.
b. Check conditions and then test whether the higher step resulted in a larger mean increase in heart rate.
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
Aerobic exercise is good for the heart. A group of college students interested in the effect of stepping exercises on heart rate conducted an experiment in which subjects were randomly assigned to a stepping exercise on either a 5.75-in. step (coded 0) or an 11.50-in. step (coded 1). Each subject started with a resting heart rate and performed the exercise for 3 minutes, at which time his or her exercise heart rate was recorded.
a. You want to test whether the higher step resulted in a larger mean gain in heart rate than did the lower step. Is this a one-sample test or a two-sample test? Explain.
Ans:: two-sample. You need data for the 5.75" step heart rates and data for
the 11.5 step heart rates.
------------------
b. Check conditions and then test whether the higher step resulted in a larger mean increase in heart rate.
Ho: u0-u1 = 0
Ha: u0-u1 < 0
Note: You provided no test data results so no conclusion can be
made.
-----------
Cheers,
Stan H.