Question

A clinical trial is run to assess the effects of different forms of regular exercise on HDL levels in a sample of healthy men between the ages of 18 and 29. Participants in the study were randomly assigned to either one of three exercise groups (Weight training, Aerobic exercise or Yoga) or to a control group in which they were assigned to a regular exercise program. Participants were instructed to follow the program for 8 weeks. Their HDL levels were measured after 8 weeks and are summarized below (which is also Table 3 on the Exam #3 Supplement Guide).

Exercise Group	n	Mean	Std Dev
Weight Training	10	52.7	5.97
Aerobic Exercise	10	43.1	11.1
Stretching/Yoga	10	57.0	12.5
Control	10	60.9	13.3

Is there a significant difference in mean HDL levels among the groups? Run the test at a 5% level of significance.  HINT:  The Error Sums of Squares is equal to 1129.76.

First, you need to indicate the competing hypotheses.

Select the appropriate test statistic

Indicate the decision rule

Overall mean and SSB

Answer 1

Pase one meanum 52. 125 SST 4-0 44-19 HsTST ー:113

Pag-2 1129·74 4o-4 31382- = て1382- F-CSİ dunce in mem.