4) Assume that 37 (sigma = 37) is the population's standard deviation. It is intended to calculate the population average (µ) for this population. An interval with a maximum size of 5 (half size 2.5) and a 92% confidence level will be produced for this purpose. What number of samples are needed?
Added by Barbara V.
Step 1
Given that the confidence level is 92%, we need to find the z-score that corresponds to this confidence level. Using a standard normal distribution table or calculator, we find that the z-score for a 92% confidence level is approximately 1.75. Show more…
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