A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.63 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.) enter the lower value of the interval ≤ μ ≤ enter the upper value of the interval The point estimate is enter the point estimate . The interval is select an option . Since zero is in the interval, there is a possibility that, on average, the flights are select an option
A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.63 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?
(Round your answers to 2 decimal places, e.g. 25.31.)
enter the lower value of the interval ≤ μ ≤ enter the upper value of the interval
The point estimate is enter the point estimate .
The interval is select an option . Since zero is in the interval, there is a possibility that, on average, the flights are select an option .
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