Sixteen guinea pigs have been randomly assigned to four groups. Within each group, each guinea pig is given 10 trials with a particular type of food. The response measure is the number of pieces of food eaten by each subject.

Determine whether or not food type affected how much food the guinea pigs ate. If so, make all pairwise comparisons using Tukey's HSD test. Lettuce Pieces Carrot Pieces Alfalfa Pellets Strawberry Pieces 10 8 5 1 9 8 5 1 9 9 4 2 10 7 6 1 How many dependent variables are there? What is(are) it(they)? ( point) How many independent variables are there? What is(are) it(they)? How many levels are there for? each IV? ( point) Hypothesis Testing Step 1: ( point) Step 2: ( point) Step 3: = 0.05

Step 4: ( point) Reject H0 if Step 5: (4 points, 2.5 for hand calculation and 1.5 for SPSS output) Fcomp = Include your calculations on a separate sheet of paper. Also, cut and paste the SPSS Output table below. Again, be sure to circle the F-ratio and p-value. If you obtain a significant F-ratio, be sure to include your HSD calculation and table of mean differences. Step 6: Circle your decision below: ( point) A. Reject H0 B. Fail to reject H0 Step 7: Conclusion: Was the number of pieces of food eaten by the guinea pigs the same for each food type? ( point) A. Yes, the number of food pieces eaten by the guinea pigs was the same for the different food types. B. No, the number of food pieces eaten by the guinea pigs was not the same for the different food types. Conclusion continued: Which of the following food types were significantly different with regard to the number of food pieces that the guinea pigs ate? (Circle all that apply.) ( point) A. Lettuce and Carrots B. Lettuce and Alfalfa C. Lettuce and Strawberries D. Carrots and Alfalfa E. Carrots and Strawberries F. Alfalfa and Strawberries G. None of the above.