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Question 1017:

To examine the effectiveness of its four annual advertising promotions, a mail order company has sent a questionnaire to each of its customers, asking how many of the previous year's promotions prompted orders that would not have otherwise been made. The accompanying table lists the probabilities that were derived from the questionnaire, where X is the random variable representing the number of promotions that prompted orders. If we assume that overall customer behavior next year will be the same as last year, what is the expected number of promotions that each customer will take advantage of next year by ordering goods that otherwise would not be purchased?

X 0 1 2 3 4
P(X) 0.086 0.213 0.345 0.188 0.168
Expected value =

A previous analysis of historical records found that the mean value of orders for promotional goods is 25 dollars, with the company earning a gross profit of 21% on each order. Calculate the expected value of the profit contribution next year.

Expected value =

The fixed cost of conducting the four promotions is estimated to be 17000 dollars with a variable cost of 4.25 dollars per customer for mailing and handling costs. What is the minimum number of customers required by the company in order to cover the cost of promotions? (Round your answer up to the next highest integer.)

Break even point =

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