You plan to take a random sample from a population of 500 items and build a 95%
Question:
a. You want a margin of error no bigger than ± 5. You estimate the population standard deviation to be 100. How large a sample is needed?
b. Suppose you want the margin of error to be no bigger than ±4. How large a sample would be needed?
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Related Book For
Understanding Business Statistics
ISBN: 978-1118145258
1st edition
Authors: Stacey Jones, Tim Bergquist, Ned Freed
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