Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How
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Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many grade-point averages must be obtained so that the sample mean is within 0.01 of the population mean? Assume that a 95% confidence level is desired. If we use the range rule of thumb, we can estimate σ to be range/4 = (4 - 0)/4 = 1. Does the sample size seem practical?
Find the sample size required to estimate the population mean.
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Related Book For 
Mathematical Interest Theory
ISBN: 9781470465681
3rd Edition
Authors: Leslie Jane, James Daniel, Federer Vaaler
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