Reference no: EM132404070

A researcher is exploring the effects of strenuous physical exercise on the onset of puberty in girls. The age of menarche is determined for six young athletes who started serious training before the age of 8. For comparison, the same measure is taken on four girls involved in a equally serious and time consuming training regimen starting at the same age but not involving such strenuous physical exercise- playing the violin. An additional seven girls not involved in any such training are included as a control group. The data are as follows:

Control                Athletes              Musicians

12                          14                          13

11                          12                         12

11                          14                          13

13                          16                          11

11                          15

12                          13

11

a. Calculate the F ratio?

b. Find the critical F(a=.01)

c. What is your statistical decision?

d. What are the limitations to the conclusions you can draw from this study?