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Hospital Noise Levels For a sample of8 operating rooms taken in a hospital study, the mean noise level was43 decibels and the standard deviation was11.5

Hospital Noise LevelsFor a sample of8

operating rooms taken in a hospital study, the mean noise level was43

decibels and the standard deviation was11.5

. Find the90%confidence interval of the true mean of the noise levels in the operating rooms. Assume the variable is normallydistributed.Round your answers to at least two decimalplaces.

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