(Answered) Approximation to the binomial distribution

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According to a flight statistics website, in 2009, a certain airline had the highest percentage of on-time flights in the airlines industry, which was 81.9%Assume this percentage still holds true for that airline. Use the normal approximation to the binomial distribution to complete parts a through c below.

a. Determine the probability that, of the next 30 flights from this airline, less than 20 flights will arrive on time.

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