The biweekly salary of on-campus jobs has a standard deviation of $5.
What sample size is required to be at least 95% confident that the mean biweekly income is within a sampling error of $0.75? (round sample size to whole number).
The sample size needed for a study depends on the precision we require. There are three key items for calculating the sample size for estimating a population mean: 1) the margin of error, 2) the standard deviation, 3) and the confidence level.
Answer and Explanation:
The sample size needed is of n= 171
How do we choose the sample size for estimating the population mean? We just need to apply the formula taking...
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from Statistics 101: Principles of StatisticsChapter 9 / Lesson 4