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The probability that Babe Ruth hits a home run on any given at-bat is 0.12, and...

The probability that Babe Ruth hits a home run on any given at-bat is 0.12, and each at-bat is independent.

Part A: What is the probability that the next home run will be on his fifth at-bat?

Part B: What is the expected number of at-bats until the next home run?

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