Assume that a sample is used to estimate a population mean μμ. Find the 99.9% confidence interval for a sample of size 39 with a mean of 49.6 and a standard deviation of 7.4. Enter your answer as anopen-interval(low, high)
99.9% C.I. =
Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
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