Question 01) Suppose the following table represents the sales figures of the 4 new menu items in the 28 restaurants after a week of test marketing. Ata =0.05 level of significance:

Item1	Item2	Item3	Item4
53	34	34	45
42	34	53	44
54	31	43	51
62	31	52	53
37	43	61	39
45	41	43	42
41	47	59	61

a. What is your recommended model for the design of experiment? Write down your model and assumptions.

b. Write the hypothesis on whether the sales are impacted by different menu items.

c. Test whether the mean sales volume for the 4 new menu items are all equal.

d. Use pairwise comparisons to find which means are significantly different?