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In: Statistics and Probability

A certain flight arrives on time 80 percent of the time. Suppose 169 flights are randomly...

A certain flight arrives on time 80 percent of the time. Suppose 169 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that ​(a) exactly 139 flights are on time. ​(b) at least 139 flights are on time. ​(c) fewer than 125 flights are on time. ​(d) between 125 and 150​, inclusive are on time. ​(a) ​P(139​)equals nothing ​(Round to four decimal places as​ needed.)

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Answer:

Given that:

A certain flight arrives on time 80 percent of the time. Suppose 169 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that

The probability that exactly 169 fights are on time is

​(a) exactly 139 flights are on time

b) at least 139 flights are on time

c) fewer than 125 flights are on time

d) between 125 and 150​, inclusive are on time

orchestra answered 1 year ago
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