Mathematics, 16.04.2020 20:32 Doogsterr
You are to conduct a sample survey to determine the mean family income in Washington County, Vermont. The question is how many families should be sampled. In a pilot sample of 10 families the standard deviation was equal to $500. If you want to be 95% confident that the estimate of mean family income will lie within $50 of the true level, how many families must you sample.
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You are to conduct a sample survey to determine the mean family income in Washington County, Vermont...
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