a. Why is it not possible to conclude from the data that decibel levels increase as it

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a. Why is it not possible to conclude from the data that decibel levels increase as it gets later in the day?
b. How could the design of the study be improved in order to allow better conclusions about the effect of time of day on noise level?


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Introduction To Statistical Investigations

ISBN: 9781118172148

1st Edition

Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy

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