1. What is the probability of z value indicated by P(Z > -1. 78) ? A. 0.0375 B. 0.3075 C. 0.9625 D. 0.9633
2. Find the probability value of P(Z< -1.0) A. 15.87% B. 34.13% C. 84. 13% D. 90.13%
3. Compute the probability value of P(1.35< Z< 2.75) A. 8.55% B. 85.5% C. 85.85% D. 90.85%.
4. Gracia, an ALS student, obtained a z-score of 1.35 in an achievement test that is normally distributed with a mean grade of 85 and standard deviation of 5. What was Gracia's grade in achievement test?
A. 71.25 B. 78.25 C. 91.75 D. 94.65
5. If the scores in a Probability and Statistics test are normally distributed with a mean of 31 and standard deviation of 4.5. What is the z-score for a score of 40?
