A medical researcher says that at least 20% of U. S. adults are smokers. In a random sample of 2000 U. S. adults, 18.5% say that they are smokers. At a = 0.05, test the claim.

Which of the following are parts of a sphere

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Graph the equation. select integers for x