Survey: Sales Approach In a sales effectiveness seminar, a

Chapter , Problem 21

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Survey: Sales Approach In a sales effectiveness seminar, a group of sales representatives tried two approaches to selling a customer a new automobile: the aggressive approach and the passive approach. For 1160 customers, the following record was kept: Sale No Sale Row Total Aggressive 270 310 580 Passive 416 164 580 Column Total 686 474 1160 Suppose a customer is selected at random from the 1160 participating customers. Let us use the following notation for events: A aggressive approach, Pa passive approach, S sale, N no sale. So, P(A) is the probability that an aggressive approach was used, and so on. (a) Compute P(S), P(S A), and P(S Pa). (b) Are the events S sale and Pa passive approach independent? Explain. (c) Compute P(A and S) and P(Pa and S). (d) Compute P(N) and P(N A). (e) Are the events N no sale and A aggressive approach independent? Explain. (f) Compute P(A or S).