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Proportion of aa flights arriving on time

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Reference no: EM131555300

American Airlines is concerned about the increasing number of delays for their national flights. A study of 150 randomly selected American Airlines national flights showed that 108 arrived on time (based on data from the Department of Transportation).

a. Find the estimated proportion of AA flights arriving on time.

b. Find a 90% confidence interval for the proportion of AA flights arriving on time.

Reference no: EM131555300

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