13. Polluted Rain Suppose you wish to estimate the mean pH of rainfalls in a heavily polluted...
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13. Polluted Rain Suppose you wish to estimate the mean pH of rainfalls in a heavily polluted area. You know that s is approximately .5 pH, and you wish your estimate to lie within .1 of m, with a probability near .95.
Approximately how many rainfalls must be included in your sample (one pH reading per rainfall)? Would it be valid to select all of your water specimens from a single rainfall? Explain.
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Related Book For 
Introduction To Probability And Statistics
ISBN: 9780357114469
15th Edition
Authors: William Mendenhall Iii , Robert Beaver , Barbara Beaver
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