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Mathematics, 22.04.2021 09:30 allenlitterell

The mean number of days with 0.01 inch or more precipitation per month for Lewiston, Idaho, is about 8.7. Find the probability that in a given month (a) There are exactly 9 days with 0.01 inch or more precipitation.
(b) There are at most 9 days with 0.01 inch or more of precipitation.
(c) There are more than 9 days with 0.01 inch or more of precipitation.

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