SOLUTION: A certain kind of sheet metal has, on average, 4 defects per 18 square feet. Assuming a Poisson distribution, find the probability that a 33 square foot metal sheet has at least 5

Question 1184337: A certain kind of sheet metal has, on average, 4 defects per 18 square feet.
Assuming a Poisson distribution, find the probability that a 33 square foot metal sheet has at least 5 defects. Round your answer to three decimal places.
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
If there are on average 4 defects per 18 square feet, then we expect to have 22/3 defects in 33 square feet of metal sheet. So

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Now you should be able to carry out the necessary calculation.
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