Question: Suppose that four normal populations with common variance 2 are to be compared with a sample size of eight observations from each population. Determine

Suppose that four normal populations with common variance σ² are to be compared with a sample size of eight observations from each population. Determine the smallest value for Σ⁴_i=1 τ²_i/ σ²that can be detected with power 90%. Use α = 0.05.

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