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Assume that students a certain high school have their final scores that are normally
distributed with a mean of 120 and a standard deviation of 20
(a) If 1 final score is randomly selected, find the probability that it is less than 153
(b) If 1 final score is randomly selected, find the probability that it is greater than 165
(c)If 4 final scores are randomly selected find the probability that it is greater than 165
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