Two hundred (200) adults were asked two questions:

Did you see a television Ad for Viagra in the past 2 weeks?

Did you purchase Viagra during the past 2 weeks? The responses to the questions are summarized in the table.

	Purchase	Total
	Yes	No
See	12	108	120
Not see	4	76	80
	16	184	200

One of these 200 adults was selected at random. Obtain the conditional probability that the chosen person purchased the Viagra in the past two weeks, given that the person saw the ad during the past two weeks. Obtain also the probability that the chosen person did not see the T.V add during the past two weeks