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Statistics / Statistical Techniques in Business and Economics 15 / Chapter 6 / Problem 16

Statistical Techniques in Business and Economics | 15th Edition | ISBN: 9780073401805 | Authors: Douglas Lind, William Marchal, Samuel Wathen

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A telemarketer makes six phone calls per hour and is able to make a sale on 30 percent

Chapter 0, Problem 16

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QUESTION:

A telemarketer makes six phone calls per hour and is able to make a sale on 30 percent of these contacts. During the next two hours, find: a. The probability of making exactly four sales. b. The probability of making no sales. c. The probability of making exactly two sales. d. The mean number of sales in the two-hour period.

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QUESTION:

A telemarketer makes six phone calls per hour and is able to make a sale on 30 percent of these contacts. During the next two hours, find: a. The probability of making exactly four sales. b. The probability of making no sales. c. The probability of making exactly two sales. d. The mean number of sales in the two-hour period.

ANSWER:

Step 1 of 5

So calls made in two hours is,

Probability of making a sale or

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