What I Know Let us see how far you will go and how much you know about this pretest. Choose the letter of the best answer. Write the chosen letter on a separate sheet of paper. 1. The given table represents a probability distribution. What is P(2) + X 1 2 3 4 54 / 392 P(X) WI A. ! B. = C.= D. = Refer to the given table in answering numbers 2-3. In the experiment of tossing a coin twice, the following table shows the probability distribution. What is P (XS 2)? X 0 P(X) NI -- 2. What is P (XS 2)? A. 1 B. - C. 4 D. 3. What is P(X21)? A. 1 B. - Refer to the given table in answering numbers 4-5. Number of Tails (X) 0 1 2 3 P(X) 0.125 0.375 0.375 0. 125 4. Find P (X 2 1) A. 0.125 B. 0.5 C. 0.625 D. 0.875 5. Find P (Xs 1) A. 0.125 B. 0.5 C. 0.625 D. 0.875Refer to the given problem in answering numbers 6-8. 6. The random variable Y representing the number of nuts in a chocolate bar has the following probability distribution. Find P (odd) 0 P(Y) 10 10 A. 10 B. = C. D. 7. Find P (1 S Y S 4) 9 "10 C.4 8. Find P (Y> 1) A.= B. = C. D. T Refer to the given problem in answering numbers 9-10. Two jars both contain the numbers 2, 4, 6, and 8. The following table shows the probability distribution of the sum when one number from each jar is taken at a time with replacement. X 4 6 8 10 12 14 16 P(X) 8 16 9. Find P(4) + P(6) A.~ B. Z C. S D.- 10. Find the probability that X assumes a value greater than 10. A.- B. Z C. 76 11. Find the probability that X assumes a value between 6 and 14. A.= B. C. - D. Refer to the given problem in answering numbers 12-13. The given table shows the probability distribution of a random variable Z which represents the percentage of male students per section among Grade 11 senior high school students. Z 8 9 11 14 15 18 P(Z) 8% 8% 25% 17% 25% 17% 12. Find P(Z211) A. 84% B.59% C. 51% D.43% 13. Find P(8