SOLUTION: Suppose that 85% of all federal tax returns filed last year are free of arithmetic errors. A random sample of seven returns is to be drawn. What is the probability of five retur

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Question 362271: Suppose that 85% of all federal tax returns filed last year are free of arithmetic errors. A random sample of seven returns is to be drawn. What is the probability of five returns being error free?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
%28matrix%282%2C1%2C7%2C5%29%29%2A0.85%5E5%2A0.15%5E2+=+0.209651, to 6 decimal places.