Suppose x has a normal distribution with = 1.2. (a) Find the minimal sample size required
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(a) Find the minimal sample size required so that for a 90% confidence interval, the maximal margin of error is E = 0.5.
(b) Based on this sample size and the x distribution, can we assume that the distribution is approximately normal? Explain.
Distribution
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Related Book For
Understanding Basic Statistics
ISBN: 9781111827021
6th Edition
Authors: Charles Henry Brase, Corrinne Pellillo Brase
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