1. In an examination the mean grade is 81 and the standard deviation is 5. Find the z scores of the grades of the students following students: a. Leandro, 70 b. Louis, 91 c. Victor, 65 d. Evelyn, 85 e. Leo, 75 2. Use problem number 1 to find the grades of the following students whose z-scores are given: a. Pepe, z=1 b. Ding, z=-2 C. Lorna, z = -2.5 d. Sam, z 1.25 e. Lito, z 2.35 3. Who performed better? a. Ping whose z-score is 1.60 or Bong whose z-score is 1.75 b. Sol whose z-score is -1.50 or Mary whose z -score is -2.0 4. During the 30th NBA season, Michael had an average score of 24 per game with a standard deviation of 6.0. In one particular game, he scored 26 points. In the 31st season, he averaged 19 points per game with a standard deviation of 5.0. In one game he scored 26 points. In which season did he perform better? 5. Robin sells stamps. He earns an average of P540.00 a day with a standard deviation of P11.00. How much did Rofin earn on a particular day if his z-score is -0.91.