Question: If X has a normal distribution with mean = 20 and standard deviation = 9, determine (a) P(X < 22), (b) P(X >

If X has a normal distribution with mean μ = 20 and standard deviation σ = 9, determine

(a) P(X < 22),

(b) P(X > 17),

(c) P(X > 15),

(d) P(2 < X < 38).

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