Posted by **david** on Sunday, June 23, 2013 at 9:51pm.

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4. Despite all efforts by the quality control department, the fabric made at Benton Corporation always contains a few defects. A certain type of fabric made at this corporation contains an average of .5 defects per 500 yards. Using the Poisson formula, find the probability that a given piece of 500 yards of this fabric will contain exactly 1 defect.