A survey was made of 100 customers at a store. Sixty of the 100 indicated they visited the store because of ad

The remainder had not seen the ad. a total of 40 customers made purchase; of these customer, 30 had seen the ad. What is the probability that a person who did not see the add made a purchase: What is the probability that person who saw the ad made a purchase?

A survey was made of 100 customers at a store. Sixty of the 100 indicated they visited the store because of ad
1) 10/40 = 1/4 = .25





2) 30/40 = 3/4 = .75
Reply:a) 10/40 = 0.25


b) 30/60 = 0.5