MGMT_305_-_HW1_Solution

# MGMT_305_-_HW1_Solution - MGMT 305 Homework#1 Page 1 of 3...

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Unformatted text preview: MGMT 305 Homework #1 Page 1 of 3 MGMT 305 Spring 2011 Assignment 1 Solution (Chapters 3, 5, 6) Chapter 3 63. (Total: 10 pts) a. Public Transportation: Automobile: (4 pts) b. Public Transportation: s = 4.64 Automobile: s = 1.83 (4 pts) c. Prefer the automobile. The mean times are the same, but the auto has less variability. (2 pts) Chapter 5 31. (Total: 15 pts) Binomial n = 10 and p = .09 a. Yes. Since they are selected randomly, p is the same from trial to trial and the trials are independent. (3 pts) b. f (2) = .1714 (4 pts) c. f (0) = .3894 (4 pts) d. 1 - f (0) - f (1) - f (2) = 1 - (.3894 + .3851 + .1714) = .0541 (4 pts) 33. (Total: 20 pts) a. f (12) = Using the binomial tables, f (12) = .1201 (5 pts) b. f (0) + f (1) + f (2) + f (3) + f (4) + f (5) = .0000 + .0000 + .0002 + .0011 + .0046 + .0148 = .0207 (5 pts) c. E ( x ) = np = 20(.5) = 10 (2 pts) MGMT 305 Homework #1 Page 2 of 3 d. Var ( x ) = σ 2 = np (1 - p ) = 20(.5)(.5) = 5 (8 pts) σ == 2.24 (1 pt) Chapter 6 17. ( Total: 20 pts)...
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MGMT_305_-_HW1_Solution - MGMT 305 Homework#1 Page 1 of 3...

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