If n=21, ¯xx¯(x-bar)=39, and s=7, construct a confidence interval at a 99% confidence level. Assume the data came from a normally distributed population of which standard deviation is unknown.
Extracted text: If n=21, 7(x-bar)=39, and s=7, construct a confidence interval at a 99% confidence level. Assume the data came from a normally distributed population of which standard deviation is unknown. Give your answers to one decimal place.
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