Mathematics, 23.02.2021 05:20, giovney

A teacher initially plans to take an SRS of size 50 from his large high school and calculate the sample mean x bar of student GPAs. Later, the teacher decides to increase the sample size so that the standard deviation of the sampling distribution of x bar will be half as big as when using a sample size of 50. What sample size should the teacher use? 57
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A teacher initially plans to take an SRS of size 50 from his large high school and calculate the sam...