Question: If X has a normal distribution with = 90 and = 4, find b such that (a) P(X < b) = .6700 (b)

If X has a normal distribution with μ = 90 and σ = 4, find b such that
(a) P(X < b) = .6700
(b) P(X > b) = .0110
(c) P(IX - 90 | < b) = .966
(d) Check all of your answers using software.

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