Almost all companies utilize some type ofyear-end performance review for their employees. Human Resources(HR) at auniversity's Health Science Center provides guidelines for supervisors rating their subordinates. Forexample, raters are advised to examine their ratings for a tendency to be either too lenient or too harsh. According toHR, "if you have thistendency, consider using a normal distributionlong dash

10% of employees(rated) exemplary,20% distinguished,40% competent,20% marginal, and10% unacceptable." Suppose you are rating anemployee's performance on a scale of 1(lowest) to 100(highest). Also, assume the ratings follow a normal distribution with a mean of 49 and a standard deviation of 16

a. What is the lowest rating you should give to an"exemplary" employee if you follow theuniversity's HRguidelines?

nothing

(Round to two decimal places asneeded.)

b. What is the lowest rating you should give to a"competent" employee if you follow theuniversity's guidelines?