question archive A test station measured the loudness of a random sample of 45 jets taking off from a certain airportThe sample mean was found to be 107
A test station measured the loudness of a random sample of 45 jets taking off from a certain airportThe sample mean was found to be 107
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A test station measured the loudness of a random sample of 45 jets taking off from a certain airportThe sample mean was found to be 107.2 dB with a sample standard deviation of 9.2 dB. Construct the 90% confidence interval for the mean loudness of all jets taking off from this airport. Round off the answers to 2 places after the decimal and interpret the confidence interval
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