Question: 10.52 For testing H0: = 10 and H1: = 10, the level of significance, = 0.05 is being considered. What sample size

10.52 For testing H0: μ = 10 and H1: μ = 10, the level of significance, α = 0.05 is being considered.

What sample size is necessary in order for the probability to be 0.1 of falsely failing to reject H0 when the true population mean differs from 10 by 0.5? From a preliminary sample, we estimate the value of σ to be 1.25.

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