Asked by mark
A survey was made of 100 customers in a department store. 70 of the customers indicated they visited the store because of a newspaper advertisement. The remainder had not seen the ad. A total of 40 customers made purchases; of these customers, 30 had seen the ad. What is the probability that a customer who saw the ad. made a purchase?
Answers
Answered by
ireland mitchell
i have no clue how to do this
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