Answer the following.

1. Which of the following could be the null hypothesis?*

?_1=?_2=?_3

?_1??_2=?_3

none of these

?_1??_2??_3

2.The computed F-value is?

3.What is the mean of squares between groups?

4.What is the sum of squares within groups?

The university dietician wishes to see whether there is any difference in the weight gains of athletes following one of three special diets. Athletes are randomly assigned to three groups and placed on the diet for eight weeks. The weights (in pounds) are shown in the table below. At 5% level of significance, can the dietician conclude that there is a difference in the weight gains? Diet A Diet B Diet C 10 12 11 14 8 6 #NODOD CHNOJCO