Question

A certain flight arrives on time 82 percent of the time. Suppose 134 flights are randomly...

A certain flight arrives on time 82 percent of the time. Suppose 134 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that

​

(a) exactly 109 flights are on time.

​(b) at least 109 flights are on time.

​(c) fewer than 104 flights are on time.

​(d) between 104 and 118​, inclusive are on time.

Math   Statistics-And-Probability   
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Answer #1

P value can be found from Excel,

=Norm.s.dist(z, cumulative)

=Norm.s.dist(-1.93,1)

= 0.9732

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