A90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.3%, 5.1%). what is the point estimate of the mean percentage of reservations that are canceled on the day of the flight?

The point estimate for the mean is 3.2% and the margin of error is 1.9% .

Step-by-step explanation:

The confidence interval for population mean is given by :-

, where E is the margin of error .

Given : A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.3%, 5.1%).

Lower limit of the confidence interval :                 (1)

Upper limit of the interval :                                   (2)

Adding (1) and (2) , we get

Now, Subtracting (1) from (2) , we get

Hence, the point estimate for the mean is 3.2% and the margin of error is 1.9% .

answer: the anser is 3

step-by-step explanation:

c- 2o is equal to 9