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# According to the Federal Highway Administration's 2006 highway statistics, the distribution of ages for licensed drivers has a mean of 47.5 years and a standard deviation of 16.6 years [www.fhwa.dot.gov]. Assuming the distribution of ages is normally distributed, what percentage of the drivers are:a. between the ages of 17 and $22 ?$b. younger than 25 years of age?c. older than 21 years of age?d. between the ages of 48 and $68 ?$e. older than 75 years of age?

## a .0289; b .0869; c .9452; d .3787; e .0485

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