According to an airline, flights on a certain route are on time 85% of the time. Suppose 20 flights are randomly selected and the number of on-time flights is recorded.
(a) Explain why this is a binomial experiment.
(b) Find and interpret the probability that exactly 14 flights are on time.
(c) Find and interpret the probability that fewer than 14 flights are on time.
(d) Find and interpret the probability that at least 14 flights are on time.
(e) Find and interpret the probability that between 12 and 14 flights, inclusive, are on time.
6 years ago
Answer
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