In a recent year, the scores for the reading portion
In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of
20.3 and a standard deviation of 5.5
(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 19
.(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 13.4
and 27.2
.(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 31.6
.
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