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A certain flight arrives on time 89 percent of the time. Suppose 148 flights are randomly...

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Statistics

A certain flight arrives on time 89 percent of the time. Suppose148 flights are randomly selected. Use the normal approximation tothe binomial to approximate the probability that

​(a) exactly 134 flights are on time.

​(b) at least 134 flights are on time.

​(c) fewer than 120 flights are on time.

​(d) between 120 and 143​, inclusive are on time.

Answer & Explanation Solved by verified expert
4.3 Ratings (908 Votes)
X Bin n p Where n 148 p 089 Mean n p 148 089 13172 Standard deviation sqrt n p 1 p sqrt 148 089 1 089 38065 Uisng normal    See Answer
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