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Suppose 77% of vehicles on a major highway exceed posted speed limit. A random sample of 31 vehicles is selected. Assuming independence, answer the following

Suppose 77% of vehicles on a major highway exceed posted speed limit. A random sample of 31 vehicles is selected. Assuming independence, answer the following binomial probability questions. Report probabilities accurate to at least 4 decimal places. What is the probability that, of the 31 vehicles selected: a) exactly 23 exceed posted speed limit? bj all of them exceed posted speed limit? c) at least 23 exceed posted speed limit

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