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answer a with solution 2. A lumber inspector has found that the face of 2 by 8's lumber produced at her mill averages 4 knots

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2. A lumber inspector has found that the face of 2 by 8's lumber produced at her mill averages 4 knots per board. If the number of knots on a board follows a Poisson distribution, what is the probability of finding more than 3 knots on two 2 by 8's

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