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Not sure what to do here Hospital Noise Levels For a sample of 8 operating rooms taken in a hospital study, the mean noise level

Not sure what to do here

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Hospital Noise Levels For a sample of 8 operating rooms taken in a hospital study, the mean noise level was 40.4 decibels and the standard deviation was 11.3. Find the 95% condence interval of the true mean of the noise levels in the operating rooms. Assume the variable is normally distributed. Round your answers to at least two decimal places

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