a) Use the variable "Annual.miles.drive" to construct the confidence intervals for the estimate of the population mean (i.e., mean of annual miles driven), by gender, i.e. by male and female drivers, at 94% levels. Interpret your confidence intervals. b) Did you make any assumptions when constructing your confidence intervals? If yes, which assumptions; if not, why? c) If insurance companies charge premiums based on the annual miles driven, based on your finding, is it warranted for insurance companies to charge male drivers higher premiums based on this data set? Explain.