Two high school seniors find themselves with much time and nothing to do. they decide to devise a computer game in which a cursor moves randomly along the x axis between –1 and 1. the game they play is to stop the cursor at random points between –1 and 1 without looking at the screen. such a game results in a uniform distribution over the interval between –1 and 1. since the area under the density curve (here a flat line) equals 1, the height of the density curve is:

(a) 1
(b) 0.5
(c) 2
(d) 0.25