What is the expected value of X? X P 2 0.2 4 0.1 5 0.25 7 0.05 10 0.4 Question 10 options: 6.25 5.95 6.4 5.6 Scores on a standardized test are normally distributed with a mean of 246 and a standard deviation of 22. Students who score at least 2.4 standard deviations above the mean receive a certificate. What is the minimum score required to receive the certificate? Question 11 options: 272.0 310.4 294.0 298.8 The weights of books on a library shelf are normally distributed with a mean of 2.8 pounds and a standard deviation of 0.6 pound. Approximately what percent of the books weigh more than 3.5 pounds? Question 12 options: 17% 12% 38% 25% Mrs. Fuller determines which four members of a population, labeled 01 to 47, will be in a sample by starting at line 128. Which members are in the sample? Table of Random Digits Line Question 13 options: 28, 40, 11, 23 28, 01, 15, 27 37, 42, 01, 15 37, 40, 15, 27 Jackie received 72% of the votes in an election. In a random sample of 40 eligible voters, 32 said they voted for Jackie. Which answer represents p and Question 14 options