what is the answer

For items 4-8, shade C if the data that is described is continuous and D If It is discrete. Those who will shade A and B here are clearly not reading. 4. The number of books in the library 5. The lifetime in hours of 15 flashlights 6. The number of tourists each day in museum 7. The capacity of water dams in a region 8. The weight of Grade 1 pupils For items 9-11, refer to the probability distribution below. P(x) 2 3 = 9. What is the mean of the probability distribution? a. 1.5 b. 1.2 C. 1.6 d. 1.8 10. What is the variance of the probability distribution? a. 0.75 b. 1.00 C. 1.25 d. 0.50 11. What is the standard deviation of the probability distribution? a. 1.00 b. 0.87 c. 1.12 d. 0.71 For items 12-14, refer to the probability distribution below. X 2 4 6 P(x) 1 12. What is the mean of the probability distribution? a. 1.5 b. 2.0 C. 3.5 d. 4.0 13. What is the variance of the probability distribution? a. 4.15 b. 6.35 c. 8.00 d. 7.50 14. What is the variance of the probability distribution? a. 4.15 b. 6.35 c, 8.00 d. 7.50 15. The number of adults living in homes on a randomly selected city block is described by the following probability distribution. x 1 2 3 4 P(x) 0.25 0.50 0.15 0. 10 What is the standard deviation of the data. a. 0.50 b. 0.62 c. 0.79 d. 0.89 For items 16-20. Given the following values, evaluate the following summations. *2 = 2 14 = 5 V1 = 2 Y2 = 1 VA = 2 16. Solve for Ex