Concept explainers
In Exercises 6.165–6.172, apply Procedure 6.3 on page 299 to approximate the required binomial probabilities.
6.171 More Adults Exercising. In the article “More US Adults Getting Some Exercise” appearing on the YAHOO News website, R. Rettner reports that about 34% of U.S. adults are physically inactive, meaning that they do not engage in any physical activity lasting at least 10 minutes a day. If 250 U.S. adults are selected at random, find the
- a. is exactly 34% of those sampled.
- b. exceeds 34% of those sampled.
- c. is less than 34% of those sampled.
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