In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 21 .9 and a standard deviation of 5.2. Complete parts (a) through (d) below. (2:) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is less than 17. The probability of a student scoring less than '17 is 0.2147 . (Round to four decimal places as needed.) (b) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is between 12.9 and 30.9. The probability of a student scoring between 12.9 and 30.9 is 0.8534 . (Round to four decimal places as needed.) (c) Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is more than 34.5. The probability of a student scoring more than 34.5 is ID. (Round to four decimal places as needed.)