b.) Test the null hypothesis that against the alternative hypothesis that at least two means differ.
Use = .01.
c.) Interpret the outcome of the hypothesis test.
9.57 Interactive video games and physical fitness. A sample of 15 adults ages 21-38
participated in the study of whether Wii Fit improves physical fitness. Each adult completed all
8 activities (rest, handheld gaming, Wii yoga, Wii muscle conditioning, Wii balance, Wii
aerobics, brisk treadmill walking and treadmill jogging.) At the end of each session, heart rate
was measured in beats per minute. The goal was to compare heart rates across eight activities,
and since each adult completed all 8 activities, a randomized block design ANOVA was
conducted.
a.) Identify the treatments for this experiment.
b.) Identify the blocks for this experiment.
Suppose your analysis of the data generated the following ANOVA table in Excel:
Source\t\tdf\tSS\tMS\tF
Treatment\t7\t217.58\t31.08\t6.53
Blocks\t14\t214.36\t15.31\t3.22
Errors\t98\t466\t4.75
Total\t119
c.) Conduct a hypothesis test to see if there is a difference in treatment means at alpha = 0.05.
d.) Conduct a hypothesis test to see if there is a difference in block means at alpha = 0.05
