Can someone check if this is correct? Thank you!

For numbers 8-10, refer to the problem below. (2 points each) The average precipitation for the first 7 months of the year is 19.32 inches with standard deviation of 2.4 inches. Assume that the average precipitation is normally distributed. 8. What is the probability that a randomly selected year will have precipitation greater than 18 inches for the 7 months? a. 0.7088 b. 0.8523 c. 0.4562 d. 0.1258 9. What is the average precipitation of 5 randomly selected years for the first 7 months? a. 19.32 inches b. 22.4 inches c. 20.52 inches d. 15.56 inches 10. What is the probability of 5 randomly selected years will have an average precipitation greater than 18 inches for the first 7 months? a. 0.8907 b. 0.2587 C. 0.4156 d. 0.2879