Answer Happy

In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 23.4 and a standard deviation of 6.9. Complete parts (a) throug (a) 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 20. The probability of a student scoring less than 20 is (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 17.2 and 29.6. The probability of a student scoring between 17.2 and 29.6 is (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 37.7. The probability of a student scoring more than 37.7 is. (Round to four decimal places as needed.) (d) Identify any unusual events. Explain your reasoning. Choose the correct answer below. OA. The event in part (c) is unusual because its probability is less than 0.05. OR The avant in nart (a) ic nucual harauca itc probability is less than 0.05