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Aviation experts fear that pilots are being asked to fly longer than is recommended by national guidelines. Current FAA regulations for domestic flights generally limit pilots to eight hours of flight time during a 24-hour period. FAA administrators conduct an analysis using a large sample of flight records for domestic flights in the past year.
Let's construct a 95% confidence interval for the average flight time of pilots. There were 81 pilots in the sample.
1. What is the margin of error for the 95% confidence interval? (report to 3 decimal places)
2. What is the lower end estimate for the 95% confidence interval? (report to 2 decimal places)
3. What is the upper-end estimate for the 95% confidence interval? (report to 3 decimal places
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