Estimating population proportion. #. Of 380 randomly selected medical students, 21 said that they planned to work in a rural community. Use a 96% condence level to estimate the true population of all medical students who plan to work in a rural community. (9points) a) Find the critical values (show your work) b) Find margin of error (show your calculation) 0) Construct condence interval for the true population of all medical students who plan to work in a rural community