During his lunch hour, Matt asked 24 students how many after-school activities they participated in. This list shows the survey results. Results: 1, 2, 0, 0, 3, 2, 4, 2, 1, 4, 3, 2, 1, 1, 2, 1, 0, 3, 3, 2, 4, 1, 1, 0 What is the ratio of the number of students not participating in an activity to the total number of students surveyed? What can you infer from this data?

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the asian project is successful and b be the event that the european project is successful. suppose that a and b are independent events with p(a) = 0.2 and p(b) = 0.8. (a) if the asian project is not successful, what is the probability that the european project is also not successful? (b) what is the probability that at least one of the two projects will be successful? (c) given that at least one of the two projects is successful, what is the probability that only the asian project is successful? (round your answer to three decimal places.)