6.13 The pH of water samples from a specific lake is a random variable X with probability...
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6.13 The pH of water samples from a specific lake is a random variable X with probability density function a Find E(X ) and V(X ).
b Find an interval shorter than (5, 7) in which at least 3/4 of the pH measurements must lie.
c Would you expect to see a pH measurement blow 5.5 very often? Why?
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Related Book For 
Probability And Statistics For Engineers
ISBN: 9781133006909
5th Edition
Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr
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