6.31 The article “Chances Are You Know Someone with a Tattoo, and He’s Not a Sailor” (Associated Press, June 11, 2006) included results from a survey of adults aged 18 to 50. The accompanying data are consistent with summary values given in the article.

At Least One Tattoo No Tattoo Age 18–29 18 32 Age 30–50 6 44 Assuming these data are representative of adult Americans and that an adult American is selected at random, use the given information to estimate the following probabilities. (Hint: See Example 6.13.)

a. P(tattoo)

b. P(tattoouage 18–29)

c. P(tattoouage 30–50)

d. P(age 18–29utattoo)