At a particular university, students' grades in introductory statistic classes are generally unimodal and skewed to the left with a mean of= 60 and a standard deviation of= 15.4. (Round your answers to four decimal places, if needed.)

(b) Ifn= 37 students are selected at random, the distribution of the sample mean grade isapproximately normalwith a mean of?and a standard deviation of?.

(c) The probability that the sample mean grade for these 37 students is less than 62.0 is ?.

(d) Ifn= 37 students are selected at random, the distribution of the sample total grade isapproximately normal with a mean of?and a standard deviation of?.

(e) The probability that the total grade for these 37 students is less than 2294.0 is?.