Given a sample mean of 45, a population variance of 25, and a sample of size 30
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Given a sample mean of 45, a population variance of 25, and a sample of size 30 drawn from a normal population, establish a 99 percent confidence interval for the population mean based on this sample. Can you find another pair of limits for which it will also be true that the probability of these limits covering the true mean is .99? If so, are these limits closer together or farther apart than the limits originally found? Does this suggest a general principle?
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Related Book For 
Statistics Probability Inference And Decision
ISBN: 9780030778056
1st Edition
Authors: Robert L. Winkler, William L. Hays
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