Question
If the population standard deviation is $\sigma=8$, how large a sample is necessary to have a standard error that isa. less than 4 points?b. less than 2 points?c. less than 1 point?
Step 1
The standard error (SE) of the sample mean is calculated using the formula: \[ SE = \frac{\sigma}{\sqrt{n}} \] where \(\sigma\) is the population standard deviation and \(n\) is the sample size. Show more…
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