Concept explainers
Using the Central Limit Theorem. In Exercises 5–8, assume that females have pulse rates that are
8. a. If 1 adult female is randomly selected, find the probability that her pulse rate is between 78 beats per minute and 90 beats per minute.
b. If 16 adult females are randomly selected, find the probability that they have pulse rates with a mean between 78 heats per minute and 90 beats per minute.
c. Why can the normal distribution be used in part (b), even though the
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