Purchased DVR
Purchased Plasma Screen Yes No Total
Plasma Screen 38 42 80
Not Plasma Screen 70 150 220
Total 108 192 300
What is the probability that a randomly selected big-screen television purchase in this sample is a purchase of a plasma-screen television?
What is the probability that a randomly selected household that purchased a big screen television purchased a plasma-screen AND a DVR?
What is the probability that a randomly selected household purchased a DVR, given that the household purchased a plasma-screen television?