Answer: The point estimator of the mean percentage of reservations that are canceled on the day of the flight is 4.85% .
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 (3.6%,6.1%).
We know that the sample mean is the best estimate of the population mean.
The point estimator of mean is half of the sum of limits of the confidence interval.
The sum of the limits of the confidence interval = 3.6%+6.1% =9.7%
The , Point estimator of mean = (sum of the limits) ÷ 2
= (9.7%) ÷ 2 = 4.85%
Hence, the point estimator of the mean percentage of reservations that are canceled on the day of the flight is 4.85% .
