8.36 Suppose that 40% of all U.S. employees contribute to a retirement plan (p 5 .40). a....
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8.36 Suppose that 40% of all U.S. employees contribute to a retirement plan (p 5 .40).
a. In a random sample of 100 employees, what is the approximate probability that at least half of those in the sample contribute to a retirement plan?
b. Suppose you were told that at least 60 of the 100 employees in a sample from your state contribute to a retirement plan. Would you think p 5 .40 for your state? Explain.
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Related Book For
Introduction To Statistics And Data Analysis
ISBN: 9781305445963
5th Edition
Authors: Roxy Peck, Chris Olsen, Jay L Devore
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