Concept explainers
In Exercises 6.165–6.172, apply Procedure 6.3 on page 299 to approximate the required binomial probabilities.
6.168 On-Time Airlines. The Office of Aviation Enforcement and Proceedings (OAEP) publishes important consumer information about airlines in Air Travel Consumer Report. During one month, 76.0% of all flights arriving at U.S. airports arrived “on time,” meaning no more than 15 minutes late at the arrival gate. The Boston airport reported 8960 arrivals during that month. If the overall percentage of on-time flights applies to Boston, what is the probability that, during that month, the number of on-time flights to Boston
- a. exceeded 6800?
- b. was between 6750 and 6850, inclusive?
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