Suppose that scores on a statistics exam are normally
distributed with a mean of 77 and a standard deviation of 4. Find
the probability of a student scoring less than 80 on the exam using
the following steps.
(a) What region of the normal distribution are you looking to
find the area of? (to the left of a zscore, to the right of a
z-score, between two z-scores, or to the left of one z-score and to
the right of another z-score)
(b)Calculate the z-score(s) needed to find the probability
(c) Find probability P(X < 80)
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