Question: Question Completion Status: QUESTION 20 E=2. Use the standard normal distribution or the t-distribution E-construct a 95% confidence interval for the population mean if

Question Completion Status: QUESTION 20 E=2. Use the standard normal distribution or

Question Completion Status: QUESTION 20 E=2. Use the standard normal distribution or the t-distribution E-construct a 95% confidence interval for the population mean if applicable. In a random sample of 13 people, the mean length of stay at a hospital was 6.5 days. Assume the population standard deviation is 1.7 days. The lengths of stay are not normally distributed. Oa. (4.32, 8.68) Ob. (5.58, 7.42) Oc. neither can be used Od. (6, 7)

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