In an experiment, college students were given either four quarters or a $1 bill and they could either keep the money or spend it on gum. The results are summarized in the table. Purchased Gum Kept the Money D 15 35 Students Given Four Quarters Students Given a $1 Bill 30 18 a. Find the probability of randomly selecting a student who spent the money, given that the student was given four quarters. The probability is (Round to three decimal places as needed.)

Suppose that 54% of people have dogs. If two people are randomly chosen, what is the probability that they both have a dog? Write your answer as a percent and round to the nearest hundredth of a percent.

Find the probability of selecting either a non-smoker or a woman when you select a person at random from a group composed of 40 female smokers, 30 male smokers, 29 female non-smokers, and 60 male non-smokers. Give your answer as a percent rounded to the nearest hundreth of a percent

How are your grades? In a recent semester at a local university, 600 students enrolled in both Statistics I and Psychology I. Of these students, 87 got an A in statistics, 75 got an A in psychology, and 32 got an A in both statistics and psychology. Round the answers to four decimal places, as needed. Find the probability that a randomly chosen student got an A in statistics or psychology or both.