Visit your local library: On a recent Saturday, a total of 1249 people visited a local library. Of these people, 258 were under age 10, 457 were aged 10-18, 155 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? (b) What is the probability that the person is more than 10 years old? Part 1 of 2 (a) What is the probability that the person is less than 19 years old? Round your answer to four decimal places. The probability that the person is less than 19 years old is Part 2 of 2 (b) What is the probability that the person is more than 10 years old? Round your answer to four decimal places. The probability that the person is more than 10 years old is olo Sick children: There are 20 students in Mrs. Bush's sixth-grade class. On a cold winter day in February, many of the students had runny noses and sore throats. After examining each student, the school nurse constructed the following table, Round the answers to four decimal places, as needed, Sore Throat No Sore Throat Runny Nose No Runny Nose Send data to Excel (a) Find the probability that a randomly selected student has a runny nose. (b) Find the probability that a randomly selected student has a sore throat c) Find the probability that a randomly selected student has a runny nose or a sore throat. d) Find the probability that a randomly selected student has neither runny nose nor a sore throat. Assume that a student is chosen at random from a class. Determine whether the events A and B are independent, mutually exclusive, or neither, A: The student is a man. B: The student belongs to a sorority. The events 4 and 3 are independent. The events 4 and B are mutually exclusive. The events -1 and B are neither independent nor mutually exclusive.If P (B ) = 0.2, find P (B). P(B) = Computer purchases: Out of 794 large purchases made at a computer retailer, 339 were personal computers, 395 were laptop computers, and 60 were printers. As a part of an audit, one purchase record is sampled at random. Round the answers to four decimal places, as needed. (a) What is the probability that it is a laptop computer? (b) What is the probability that it is not a printer? Part 1 of 2 ( a) What is the probability that it is a laptop computer? The probability that it is a laptop computer is Part 2 of 2 (b) what is the probability that it is not a printer? The probability that it is not a printer is . Exactly 50 of the iphone apps have over 100,000 downloads. The complement is: The number of iphone apps each with over 100,000 downloads is (Choose one) . Part 2 of 4 At least 50 of the iphone apps have over 100,000 downloads. The complement is: (Choose one) iphone apps have over 100,000 downloads. At most 49 At most 50 Part 3 of 4 More than 50 of the iphone apps have over 100,000 downloads. The complement is: (Choose one) V iPhone apps have over 100,000 downloads. Part 4 of 4 Fewer than 50 of the iphone apps have over 100,000 downloads. The complement is: (Choose one) v |iphone apps have over 100,000 downloads x 5