Use the estimated coefficients that you found in parts a. through d. to identify the correct statements regarding mean robbery rates in southern vs. non-southern states. you do not need to take statistical significance into consideration here. select all that apply. a. the average crime rate for southern states was greater than the average crime rate for non-southern states. b. the average crime rate for southern states was less than the average crime rate for non-southern states. c. the average crime rate for southern states was greater than the average crime rate for non-southern states, when controlling for number of males per 1000 females. d. the average crime rate for southern states was less than the average crime rate for non-southern states, when controlling for number of males per 1000 females. e. the average crime rate for southern states was greater than the average crime rate for non-southern states, when controlling for 1960 per capita expenditure on police by state and local government. f. the average crime rate for southern states was less than the average crime rate for non-southern states, when controlling for 1960 per capita expenditure on police by state and local government. g. the average crime rate for southern states was greater than the average crime rate for non-southern states, when controlling for both males per 1000 females and 1960 per capita expenditure on police by state and local government. h. the average crime rate for southern states was less than the average crime rate for non-southern states, when controlling for both males per 1000 females and 1960 per capita expenditure on police by state and local government.