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A water treatment plant needs to maintain the pH of the water in the reservoir at a certain level. To monitor this, they take 2 oz. of water at 37 locations every hour, measure the pH at each of those locations, and find their average. If the pH level of the reservoir is ok, the results at each location will have varying results, with an average pH of 8.5 and a standard deviation of 0.22. If the pH level of the reservoir is ok, what is the probability that the sample average is LESS than 8.40?
A. -0.45 B. 0.6736 C. 0.9971 D. -2.76 E. 0.0029 F. 0.3264
In the following example, why would Chebyshev's Theorem be used instead of the Empirical Rule?
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consider two independent random variables xsub1 and xsub2 having the same cauchy distributionfx1pie1x2 for negative
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