Question
A certain flight arrives on time 82 percent of the time. Suppose 198
flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that
​(a) exactly 172 flights are on time.
​(b) at least 172 flights are on time.
​(c) fewer than148 flights are on time.
​(d) between 148 and 168​, inclusive are on time.

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