A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.59 minutes. The opulation standard deviation was 13 minutes. Construct a 95% confidence interval for the average time that a commercial flight of inder 2 hours is late. What is the point estimate? What does the interval tell about whether the average flight is late? Appendix A Statistical Table Round your answers to 2 decimal places, e.g. 25.31.) he point estimate is he interval is Since zero is in the interval, there is a possibility that, on average, the flights are

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A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.59 minutes. The
population standard deviation was 13 minutes. Construct a 95% confidence interval for the average time that a commercial flight of
under 2 hours is late. What is the point estimate? What does the interval tell about whether the average flight is late?
Appendix A Statistical Tables
(Round your answers to 2 decimal places, e.g. 25.31.)
<HS
The point estimate is
The interval is
* . Since zero is in the interval, there is a possibility that, on average, the flights are
Transcribed Image Text:A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.59 minutes. The population standard deviation was 13 minutes. Construct a 95% confidence interval for the average time that a commercial flight of under 2 hours is late. What is the point estimate? What does the interval tell about whether the average flight is late? Appendix A Statistical Tables (Round your answers to 2 decimal places, e.g. 25.31.) <HS The point estimate is The interval is * . Since zero is in the interval, there is a possibility that, on average, the flights are
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