In a recent​
year, the scores for the reading portion of a test were normally​
distributed, with a mean of 22.5 and a standard deviation of 5.9.
Complete parts​ (a) through​ (d) below.
(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 21 The probability of a student scoring less than 21 is (Ro