Question: 5. Suppose that a random variable Y has a lognormal distribution with parameters = 4 and 2 = 4. Determine the following: (a) the

5. Suppose that a random variable Y has a lognormal distribution with parameters

μ = 4 and σ2 = 4. Determine the following:

(a) the mean and standard deviation of Y,

(b) P(Y >250),

(c) P(100 < Y < 200).

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