Solution: Sample Size. In Exercises 2532, find the sample size required to estimate the
Chapter 7, Problem 26(choose chapter or problem)
Sample Size. In Exercises 2532, find the sample size required to estimate the population mean.Mean Grade Point Average As part of a study of grade inflation, you want to estimate the mean grade point average of all current college studentsin the United States. All grade point averages are to be standardized for a scale between 0 and 4. How many grade point averages must be obtainedso that the sample mean is within 0.2 of the population mean? Assume that a 99% confidence level is desired. Also assume that a pilot study showedthat the population standard deviation is estimated to be 0.79. Does it make sense to collect the entire sample at your college?
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