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Unformatted text preview: = HYPGEOMDIST(0,5,4,52) = .6588 d. 1  f (0) = 1  .6588 = .3412 Chapter 6: 18. = 30 and = 8.2 a. At x = 40, 40 30 1.22 8.2 z P ( z 1.22) = .8888 P ( x 40) = 1  .8888 = .1112 Using Excel: =1NORMDIST(40,30,8.2,TRUE) = .1113 (you wont have Excel during test, learn to use tables) b. At x = 20, 20 30 1.22 8.2 z P ( z 1.22) = .1112 So, P ( x 20) = .1112 Using Excel: =NORMDIST(20,30,8.2,TRUE) = .1113 (you wont have Excel during test, learn to use tables) c. A zvalue of 1.28 cuts off an area of approximately 10% in the upper tail. x = 30 + 8.2(1.28) = 40.50 A stock price of $40.50 or higher will put a company in the top 10% Using Excel: =NORMINV(.9,30,8.2) = 40.51 (you wont have Excel during test, learn to use tables)...
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 Fall '08
 LANDRIGAN

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