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Hip surgery: In a sample of 130 hip surgeries of a certain type, the average surgery time was 138.3 minutes, with a standard deviation of

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Hip surgery: In a sample of 130 hip surgeries of a certain type, the average surgery time was 138.3 minutes, with a standard deviation of 23.4 minutes. Part: 0 / 2 Part 1 of 2 Construct a 99.3% confidence interval for the mean surgery time for this procedure. Round the answers to one decimal place. A 99.5% confidence interval for the mean surgery time for this procedure is 132.9

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