1522 customers at a major retailer were surveyed whether or not they made a purchase and were satisfied with the service they received. The table below organizes the responses.

	Satisfied with Service	Not Satisfied with Service	Total
Made a Purchase	130	494	624
Did Not Make a Purchase	715	183	898
Total	845	677	1522

a. What is the probability that a shopper selected at random made a purchase, given that they were not satisfied with the service? answer in fraction

b. What is the probability that a shopper selected at random made a purchase or was satisfied with the service they received?answer in fraction

c. What is the probability that a shopper selected at random was not satisfied with the service, given that they made a purchase? answer in fraction