In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of

22.7

and a standard deviation of

6.6.

Complete parts (a) through (d) below.

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Part 1

(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

enter your response here.

(Round to four decimal places as needed.)