A college library has four copies of a certain book; the copies are numbered 1, 2, 3, and 4. Two of these are selected at random. The first selected book is placed on 2-hr reserve, and the second book can be checked out overnight. a. Construct a tree diagram to display the 12 outcomes in the sample space. b. Let A denote the event that at least one of the books selected is an even-numbered copy. What outcomes are in A? c. Suppose that copies 1 and 2 are first printings, whereas copies 3 and 4 are second printings. Let B denote the event that exactly one of the copies selected is a first printing. What outcomes are contained in B?

Chapter 8 Notes – Surveys and Sampling Poll: What proportion of all registered voters in the state support the Affordable Care Act Would 1000 voters in Iowa or 1000 voters in NY provide a more accurate estimate (answer in lecture) Example: What percent of St. Cloud teenagers have a smart phone Unknowable so estimate it --- from a sample --- how to take the sample Is the...