Question

A Example 9.3 gave the following airborne times (in minutes) for 10 randomly selected flights from San Francisco to Washington Dulles airport: 270 256 267 285 274 275 266 258 271 281
a. Compute and interpret a 90% confidence interval for the mean airborne time for flights from San Francisco to Washington Dulles.
b. Give an interpretation of the 90% confidence level associated with the interval estimate in Part (a).
c. If a flight from San Francisco to Washington Dulles is scheduled to depart at 10 a.m., what would you recommend for the published arrival time? Explain.


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  • CreatedSeptember 19, 2015
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