During Spring 2016, 90 randomly selected Purdue undergrads were asked if, in a typical day, they watch something on an actual television set. A similar survey of 68 Purdue staff members was also conducted. The results are recorded in the Purdue TV Watchers dataset. Use Minitab to compute a 90% confidence interval based on these samples for the difference between the proportion of undergrads and staff members who watch something on a TV set in a typical day and give an interpretation of your interval. In particular, are we 90% confident that a higher percentage of staff members watch a TV on a typical day than undergrads.

The vertex of this parabola is at (-2, 5). which of the following could be it’s equation? a. y=3(x+2)^2-5 b. y=3(x-2)^2-5 c. y=3(x+2)^2+5 d. y=3(x-2)^2+5

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit