yunchun yunchun

22-03-2024
Mathematics

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Consider the following Hypothesis test. H0:u≥10 H1:u<10 The sample size is 120 and the population standard deviation is 5. Use alpha=0.05.
If the actual population mean is 9, the probability of Type II error is 0.2912. Suppose the researcher wants to reduce the probability of type II error to 0.1 when the actual population mean is 9. What sample size is recommemded?

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