8. An experiment will be performed to test for a difference between the means of two treatment groups. The standard deviations of the two processes are expected to be about σ = 0.8 and they are expected to be normally distributed. Determine the sample size required to detect a bias between the population means of = 1.5 with 90% power. Assume that the type 1 error rate is α = 0.05. MM&B Inc.

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