# Probability

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A) In a (poorly run) widget factory, it is known that 25% of all products off the line will be defective. A random sample of 5 widgets is taken on a certain day. What is the probability that all of the widgets are defective? What is the probability that none are defective?

B) A coin is flipped 5 times in a row. What is the probability that it will come up tails all five times? What is the probability that it will come up tails exactly 4 times?

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A) In a (poorly run) widget factory, it is known that 25% of all products off the line will be defective. A random sample of 5 widgets is taken on a certain day. What is the probability that all of the ...

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