1. 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

1. 
    
2. a.   What is the probability that a shopper selected at random made a purchase, given that they were not satisfied with the service?  need your answer as a fraction.
3. 
   b. What is the probability that a shopper selected at random made a purchase or was satisfied with the service they received?  need your answer as a fraction.