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A certain flight arrives on time 85 percent of the time. Suppose 188 flights are randomly...

A certain flight arrives on time 85 percent of the time. Suppose 188 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that ​(a) exactly 160 flights are on time. ​(b) at least 160 flights are on time. ​(c) fewer than 155 flights are on time. ​(d) between 155 and 166​, inclusive are on time.

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