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18 March, 19:11

A city's annual rainfall totals are normally distributed, and the probability that the city gets more than 43.2 inches of rain in a year is given by P (z≥1.5) = 0.0668. If the standard deviation of the city's yearly rainfall totals is 1.8 inches, what is the city's mean annual rainfall?

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  1. 18 March, 19:42
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    40.5 is the city's mean annual rainfall.
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