Question: Suppose that five normal populations have common variance 2 100 and means 1 175, 2 190, 3 160, 4 200,

Suppose that five normal populations have common variance 2 100 and means 1 175, 2 190, 3 160, 4 200, and 5 215.

How many observations per population must be taken so that the probability of rejecting the hypothesis of equality of means is at least 0.95? Use 0.01.

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