You want to estimate the mean family income in a rural area of central Indiana. The question
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You want to estimate the mean family income in a rural area of central Indiana. The question is, how many families should be sampled? In a pilot sample of 10 families, the standard deviation of the sample was $500. The sponsor of the survey wants you to use the 95% confidence level. The estimate is to be within $100. How many families should be interviewed?
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Related Book For
Statistical Techniques in Business and Economics
ISBN: 978-1259666360
17th edition
Authors: Douglas A. Lind, William G Marchal
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