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Using the Central Limit Theorem. In Exercises 5–8, assume that females have pulse rates that are
5. a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 80 beats per minute.
b. If 16 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 80 beats per minute.
c. Why can the normal distribution be used in part (b), even though the
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