a. If 1 SAT score is randomly selected, find the probability that it is between 1550 and
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a. If 1 SAT score is randomly selected, find the probability that it is between 1550 and 1575.
b. If 25 SAT scores are randomly selected, find the probability that they have a mean between 1550 and 1575.
c. Why can the central limit theorem be used in part (b), even though the sample size does not exceed 30?
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