Hi, Kindly assist.

QUESTION 4 [20 Marks] (a) Suppose the data for five observations in a row-by-column analysis of variance are as follows Row Column 1 2 1 6 4 2 6, 42 12 The analogy for unbalanced data of the analysis of variance for the interaction sum of squares is r y? c 3,2].- 2 22%;- 2% 2%+%- l=1j=1 =1 \"'3 j=1 (i) Use the above data to show that this expression is not positive definite. (ii) Why then can it not be described as a sum of squares? (8+2=10) (b) Find the first two moments of i when \"\"X3