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# Chap006 - Chapter 6 1 Problems For a particular group of...

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Chapter 6 Problems 1. For a particular group of taxpayers, 25 percent of the returns are audited. Six taxpayers are randomly selected from the group. a. What is the probability two are audited? ( 29 ( 29 ( 29 ( 29 ( 29 2966 . 3164 . 0625 . 15 75 . 25 . ) 2 ( 4 2 6 2 = = = C P b. What is the probability two or more are audited? ( 29 ( 29 ( 29 ( 29 [ ] [ ] 466 . 3560 . 1780 . 1 75 . 25 . 75 . 25 . 1 ) 2 ( 5 1 6 1 6 0 6 0 = + - = + - = C C X P 2. On the average an artist sells two of her works per hour at weekend art shows. What is the probability of selling least one work this hour? 8647 . 3890 . 7 1 1 ! 0 2 1 ) 1 ( 2 0 = - = - = - e X P 3. There are 18 sales representatives employed at AVC Electronics, ten of which are women. If we select four sales representatives at random to attend a conference, what is the likelihood three of the four are women?
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