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A college student is employed as a door-to-door newspaper salesman. Historical d

ID: 3306668 • Letter: A

Question

A college student is employed as a door-to-door newspaper salesman. Historical data suggests that the student sells a subscription to 6% of the homes he visits. Suppose the student begins going door-to-door at some point in time.

QUESTION 14 A college student is employed as a door-to-door newspaper salesman. Historical data suggests that the student sells a subscription Given that 4 subscriptions are sold at the first 11 homes, on average, how many homes will have been visited when the 9th subscription is sold? (Report answer to three decimal places. Answer must be within- 0.001 of correct value.)

Explanation / Answer

Given that 4 subscriptions are already sold in 11 homes, therefore to see a total of 9, we need to sell 5 more. The expected number of homes that are to be visited to sell 5 more subscriptions is computed as;

= 5* ( 1/ 0.06)

= 83.333

Therefore total expected number of homes that are to be visited when the 9th subscription is sold is computed as: = 11 + 83.3333 = 94.333

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