Question: In a one-way layout, show that Yi + is the least-squares estimator of i by showing that the ith coordinate of the vector (Z'Z)1Z'Y is

In a one-way layout, show that Yi + is the least-squares estimator of μi by showing that the ith coordinate of the vector (Z'Z)−1Z'Y is i + for i = 1, . . . , p.

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