A certain kind of sheet metal has, on average, 8 defects per 15 square feet. Assuming a Poisson distribution, find the probability that a 21 square foot metal sheet has at least 13 defects. Round your answer to four decimals.

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step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

mnkjn

step-by-step explanation:

jfkc

step-by-step explanation:

jhcxzbfzc