ind the 95% confidence interval of the true mean of the noise levels in the operating rooms.
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Hospital Noise Levels For a sample of 7 operating rooms taken in a hospital study, the mean noise level was 42
decibels and the standard deviation was 11.4. Find the 95% confidence interval of the true mean of the noise levels in the operating rooms. Assume the variable is
___< means< ___
|
<<μ
|
|
It is given that
Sample mean = 42
Sample std. deviation = 11.4
Sample size = 7
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