Question: 59. Let (Xl) .. , Xpj ) , j = 1, .. . , n, be a sample from a p-variate normal distribution with mean

59. Let (Xl)" .. , Xpj ) , j = 1, .. . , n, be a sample from a p-variate normal distribution with mean -l/(p - 1). [For fixed a and p < 0, the quadratic form (1/a2)LLaijYiJ'j = LY? + PLLYiJ'j takes on its minimum value over LY? = 1 when all the y's are equal.]

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