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A random sample was selected of 500 helmets which serve to protect motorcycle drivers. Suppose that...

A random sample was selected of 500 helmets which serve to protect motorcycle drivers. Suppose that the probability of a helmet failing is 0.02.

A. What is the probability that 1 helmet from the sample fails?

B. Determine the probability that 13 to 17 helmets from the sample fail.

Math   Statistics-And-Probability   
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