To construct: The 90% confidence interval estimate of the population percentage of on-time flights. To check: Whether the confidence interval describes the percentage of on-time flights for all American Airlines flights or not.

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Chapter 7.2, Problem 38BSC

To determine

To construct: The 90% confidence interval estimate of the population percentage of on-time flights.

To check: Whether the confidence interval describes the percentage of on-time flights for all American Airlines flights or not.

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