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1. Each salesperson in a large department store chain is rated on their sales ab

ID: 3330788 • Letter: 1

Question

1. Each salesperson in a large department store chain is rated on their sales ability and their potential for advancement. The data for the 513 sampled salespeople are summarized in the following table.   


What is the probability that a salesperson selected at random has above average sales ability and is an excellent potential for advancement?

a) 0.17

b) 0.68

c) 0.26

d) 0.22

Potential for Advancement Fair Good Excellent Sales Ability Below Average 20 15 22 Average 48 64 44 Above Average 95 70 135

Explanation / Answer

P(robability that a salesperson selected at random has above average sales ability and is an excellent potential for advancement) = Number of salesmen with above average sales ability and is an excellent potential for advancement / Total number of salesmen

= 135/513

= 0.26 (option c)