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American Airlines' flights from Boston to Dallas are on time 90 % of the time. Suppose...

American Airlines' flights from Boston to Dallas are on time 90 % of the time. Suppose 11 flights are randomly selected, and the number on-time flights is recorded.

1.The probability that at least 2 flights are on time is =

2.The probability that at most 4 flights are on time is =

3.The probability that exactly 9 flights are on time is =

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