# Question

The price (dollars per 1,000 board feet) of Douglas r from western Washington and Oregon varies according to a triangular distribution T(300, 350, 490).

(a) Find the mean.

(b) Find the standard deviation.

(c) What is the probability that the price will exceed 400?

(a) Find the mean.

(b) Find the standard deviation.

(c) What is the probability that the price will exceed 400?

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