In the hospital study cited in Exercise 19, the mean noise level in the 171 ward areas

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In the hospital study cited in Exercise 19, the mean noise level in the 171 ward areas was 58.0 decibels, and the population standard deviation is 4.8. Find the 90% confidence interval of the true mean.

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Elementary Statistics A Step By Step Approach

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Authors: Allan Bluman

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Question Posted: Sep 02, 2015 03:55 AM

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In the hospital study cited in Exercise 19, the mean noise level in the 171 ward areas

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Elementary Statistics A Step By Step Approach

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