Mathematics, 20.05.2021 01:00 ninaaforever

#1. A recent study of 20 city residents showed that the time they had lived at their present address has a mean of 9.3 years with the standard deviation of 2 years. Find the 90% confidence
interval of the true mean. Assume that the variable is approximately normally distributed

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#1. A recent study of 20 city residents showed that the time they had lived at their present address has a mean of 9.3 years with the standard deviation of 2 years. Find the 90% confidence interval of the true mean. Assume that the variable is approximately normally distributed

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Another question on Mathematics

#1. A recent study of 20 city residents showed that the time they had lived at their present address has a mean of 9.3 years with the standard deviation of 2 years. Find the 90% confidence
interval of the true mean. Assume that the variable is approximately normally distributed