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A hospital would like to determine the mean length of stay for its patients having major surgery. A sample of 18 patients showed a sample

A hospital would like to determine the mean length of stay for its patients having major surgery. A sample of 18 patients showed a sample mean of 5.8 days and a sample standard deviation of 2 days. Assume that the length of stay is approximately normally distributed. Find the upper limit of a 99% confidence interval for the mean length of stay for patients having surgery at the hospital. Round your answer to two decimal places

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