Suppose that cranberries muffins have an average of six cranberries. (a) What is the probability that half a muffin has at least four cranberries? (b) What is the probability that half a muffin has two or less cranberries? (c) Given that the first half of my muffin had two cranberries or less, what is the probability that the second half has four or more cranberries?
Let X is a random variable shows the number of cranberries in hafl muffin. Here X has Poisson distribution with parameter .
The pdf of X is
(a)
The probability that half a muffin has at least four cranberries is
(b)
The probability that half a muffin has two or less cranberries is
(c)
Each half part of muffin are indepedent from each other. So the probability that half a muffin has at least four cranberries given that the first half of my muffin had two cranberries or less is equal to the probability that half a muffin has at least four cranberries. So,
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