A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.4,4.3). what is the point estimator of the mean percentage of reservations that are canceled on the day of the flight?

2.85

Step-by-step explanation:

Given : A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.4, 4.3) .

We know that the the confidence interval for population mean is given by :-

, where E is the margin of error.

Lower limit of confidence interval =          (1)

Upper limit of confidence interval =          (2)

Adding (1) and (2), we get

Hence, the point estimator of the mean percentage of reservations that are canceled on the day of the flight = 2.85