The freshman class has 160 students. each freshman must write three reports from a list of 12 novels that the teacher has assigned them to read. how many different combinations of novels can a freshman student choose to write reports on? a. 36b. 220c. 480

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.