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in a recent? year, the scores for the reading portion of a test were normally? distributed, with a mean of 21.8 and a standard deviation of 5.2. Use Table 4 in the back of your text to complete parts? (a) through? (d) below. Scroll to see the entire problem.
(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.
?(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 17.8 and 25.8.
?(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 32.5.
?(d) Are any of the events in parts a through c considered? unusual? Why or why? not?
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