Solved: Reconsider the paint-drying situation of Example
Chapter 8, Problem 18E(choose chapter or problem)
Problem 18E
Reconsider the paint-drying situation of Example 8.2, in which drying time for a test specimen is normally distributed with σ = 9. The hypotheses H0: μ = 75 versus Ha: μ < 75 are to be tested using a random sample of n = 25 observations.
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