Mathematics, 12.08.2020 04:01, sameh0425

Everyday for 60 days, there is a 25% chance of rain. a) Find the probability that it will rain exactly 50 days. b) Find the expected value and variance of the number of rainy days. c) Approximate the probability that it will rain at least 20 days. d) Approximate the probability that there are more than 40 and less than 50 rainy days.

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Everyday for 60 days, there is a 25% chance of rain. a) Find the probability that it will rain exact...