The price dollars per 1 000 board feet of Douglas r The price (dollars per 1,000 board feet) of…

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The price dollars per 1 000 board feet of Douglas r

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?

The price dollars per 1 000 board feet of Douglas r

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