In a recent year the scores for the reading portion of a test were normally distributed with a mean of 22 1 and a standard deviation of 6 2 Complete parts a through di 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 16 The probability of a student scoring less than 16 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 18 7 and 25 5 The probability of a student scoring between 18 7 and 25 5 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 34 5 The probability of a student scoring more than 34 5 is Round to four decimal places as needed d Identify any unusual events Explain your reasoning Choose the correct answer below OA None of the events are unusual because all the probabilities are greater than 0 05 B The events in parts a and b are unusual because its probabilities are less than 0 05 OC The event in part c is unusual because its probability is less than 0 05 OD The event in part a is unusual because its probability is less than 0 05