Question: Exercise 4.8 If N1 = N2 = = Nt N, show that two contrasts 1 and 2

Exercise 4.8 If N1 = N2 = · · · = Nt ≡ N, show that two contrasts λ 

1β and λ 

2β

are orthogonal if and only if λ 

1λ2 = 0.

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