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Noise levels at various area urban hospitals were measured in decibels The mean noise level in 179 ward area was 57.9 decibels and the population standard deviation is

Noise levels at various area urban hospitals were measured in decibels. The mean noise level in 179 ward area was 57.9 decibels, and the population standard deviation is 4.7. Find the 95% confidence interval of the true mean. Round your answer to one decimal place

Aug 01 2020 View more View Less

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