An environmental impact study was performed in a small state to determine the effectiveness of scrubbers on
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Suppose a larger study is planned for a state with a more extreme pollution problem.
a. How many chemical plant cooling towers need to be measured if we want a probability of .90 of detecting a mean reduction in pollution of 10 ppm due to installing the scrubbers using an α = .01 test?
b. What assumptions did you make in part (a) in order to compute the sample size?
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a b We assumed that ...View the full answer
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Related Book For 
An Introduction To Statistical Methods And Data Analysis
ISBN: 9781305465527
7th Edition
Authors: R. Lyman Ott, Micheal T. Longnecker
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