-3} Ch 7 - #54 - University Costs. After deducting grants based on need, the average cost to attend the University of Southern California (USC) is $27,175. Assume the population standard deviation is 57400. Suppose that a random sample of 60 USC students will be taken from this population. a. What is the value of the standard error of the mean? b. What is the probability that the sample mean will be more than 527,1757 c. What is the probability that the sample mean will be within 51000 of the population mean? d. How would the probability in part (c) change if the sample size were increased