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OpenStudy (anonymous):
How should I think about this: The yearly amount of rain is normally distributed with μ = 315 mm and σ = 29 mm. The amount of rain per year is assumed independent. Determine the probability that during a period of 10 years the amount of rain exceeds 363 mm at least 3 years.
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OpenStudy (anonymous):
Solved it, sorry about that. It's simply p = P[X < 363] then Bin(10,p)
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