Question 2. Having trouble figuring out how to even begin? What formula do I use?

standard deviation for the resulting distribution ofz-scores. 2. On a psychology exam with p = 72 and o = 12, you get a score of X = 78. The same day, on an English exam p = 56 and o = 5, you get a score of X = 66. For which of the two exams would you expect to receive the better grade? Explain your answer. 3. A score that is 10 points below the mean corresponds to az-score of z = -2.00. What is the population standard deviation