Probability that two stages take over eighty minutes

Reference no: EM13124674

The time required for the first stage of an assembly line is normally distributed with a mean of 32 minutes and a variance of 6 minutes, while the time required for an independent second stage is normally distributed with a mean of 43 minutes and variance of 10 minutes. What is the probability that the two stages take over 80 minutes?

(A) .1056 (B) .1865 (C) .2593 (D) .3341 (E) .3773

Reference no: EM13124674

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