Answer Happy

Problem 4, Travel [4 points] Suppose the probability that a US resident has traveled to Canada is 0.18, to Mexico is 0.09, and to both countries is 0.04. (a) Create a Venn diagram for the scenario above. (b) What is the probability that an American chosen at random has traveled to Canada but not Mexico? (c) What is the probability that an American chosen at random has traveled to either Canada or Mexico? (d) What is the probability that an American chosen at random has not traveled to either country? Problem 5, Freshman graduation [4 points] A study finds that 70% of incoming college freshman attended public high schools, 75% of public high school students who enroll as freshman eventually graduate, and 0.85% of other freshman eventually graduate. (a) Create a tree diagram for the scenario above. (b) What percent of freshman attend a public high school and eventually graduate? (c) What percent of freshman eventually graduate? (d) What percent of those who graduate attended a public high school?