Visit your local library:On a recent Saturday, a total of 1253 people visited a local library. Of these people,

247 were under age 10, 451 were aged 10-18,

173 were aged 19-30,and the rest were more than 30 years old. One person is sampled at random.

(a) What is the probability that the person is less than 19

years old? Round your answer to four decimal places.

(b) What is the probability that the person is more than 10

years old? Round your answer to four decimal places.