A confidence interval for a population mean has a margin of error of 10.7. a. Obtain the length of the confidence interval. b. If the mean of the sample is 75.2, determine the confidence interval. c....

A confidence interval for a population mean has a margin of error of 10.7.

a. Obtain the length of the confidence interval.
b. If the mean of the sample is 75.2, determine the confidence interval.
c. Express the confidence interval in the form “point estimate ± margin of error.”