Solution-HW1

# Solution-HW1 - MGMT 305 Spring 2007 Assignment 1 Solution...

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Unformatted text preview: MGMT 305 Spring 2007 Assignment 1 Solution (Chapters 3, 5, 6) Chapter 3 27. ( 18 points—3 each ) a. f (12) = .1144 b. f (16) = .1304 c. P ( x ≥ 16) = f (16) + f (17) + f (18) + f (19) + f (20) = .1304 + .0716 + .0278 + .0068 + .0008 = .2374 d. P ( x ≤ 15) = 1 - P ( x ≥ 16) = 1 - .2374 = .7626 e. E ( x ) = n p = 20(.7) = 14 f. Var ( x ) = n p (1 - p ) = 20 (.7) (.3) = 4.2 σ = 4.2 = 2.0494 35. ( 12 points—3 each ) a. f (0) + f (1) + f (2) = .0115 + .0576 + .1369 = .2060 b. f (4) = .2182 c. 1 - [ f (0) + f (1) + f (2) + f (3) ] = 1 - .2060 - .2054 = .5886 d. μ = n p = 20 (.20) = 4 Chapter 6 21. ( 10 points) From the normal probability tables, a z-value of 2.05 cuts off an area of approximately .02 in the upper tail of the distribution. x = μ + z σ = 100 + 2.05(15) = 130.75 A score of 131 or better should qualify a person for membership in Mensa. 25. μ = 442.54, σ = 65 a. ( 5 points) 400 442.54 .65 65 z- = = - P ( x > 400) = P ( z > -.65) = .5000 +.2422 = .7422 1 b. ( 5 points)...
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## This note was uploaded on 06/29/2008 for the course MGMT 305 taught by Professor Priya during the Spring '08 term at Purdue.

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Solution-HW1 - MGMT 305 Spring 2007 Assignment 1 Solution...

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