Use the confidence level sample data to find a confidence interval for estimating the population U.
Question: Use the confidence level sample data to find a confidence interval for estimating the population U. 39 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 15.3 pounds and a standard deviation of 1.9 pounds. What is the 95 percent confidence interval for the true mean weight, u, of all packages received by the parcel service?
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