Select all that apply The mean and the standard deviation of scores on an accounting exam are 74 and 8, respectively. The mean and the standard deviation of scores on a marketing exam are 78 and 10, respectively. Find the z-scores for a student who scores 90 in both classes. Multiple select question. z-score in the accounting class is z=(90-74)/10 =1.6 z-score in the marketing class is z=(9078)/10=1.2 z-score in the accounting class is z=(90-74)/8 =2 z-score in the marketing class is z=(9078)/8=1.5