Question: 19. For the two-way main-effects model (6.2.3) with equal sample sizes, (a) verify the computational formulae for ssE given in (6.5.38), (b) and, if SSE

19. For the two-way main-effects model (6.2.3) with equal sample sizes,

(a) verify the computational formulae for ssE given in (6.5.38),

(b) and, if SSE is the corresponding random variable, show that E[SSE]is(n − a − b + 1)σ2. [Hint: E[X2] = Var(X) + E[X] 2.]

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