# APS5 - Paul Donhauser COB 191: Business Statistics...

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Paul Donhauser COB 191: Business Statistics Professor Ping Wang Assigned Problem Set No. 5 5.8) a. E(X) = \$90 E(Y) = \$30 b. σ X = \$126.10 σ Y = \$10.95 c. σ XY = -\$1300 d. E(X+Y) = \$120 5.10) a. E(W+S) = 9.5 mins. b. σ W+S = 1.9209 mins. 5.18) a. .5997 b. .0016 c. .0439 d. .4018 5.20) a. μ = .40 σ = .6 b. μ = .1.6 σ = .9798 c. μ = 4 σ = .8944 d. μ = 1.5 σ = .866 5.22) a. P(X = 5) = .0778 b. P(X ≥ 3) = .6826 c. P(X ≤ 1) = .0870 d. a. P(X=5) = .3277 b. P(X ≥ 3) = .9421 c. P(X ≤ 1) = .0067 5.28) a. Empirical Classical Probability b. P(X 5) = 1.4E ˂ -5 c. P(X ≥ 10) = .9721 d. P(X = 20) = .000446867 5.30) a. P(X = 2) = .2565 b. P(X = 8) = .1396 c. P(X = 1) = .3033 d. P(X = 0) = .0247 Page 1 of 3

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5.32) a. P(X = 1) = .0337 b. P(X 1) = .0067 ˂ c. P(X 1) = .9596 ˃ d. P(X ≤ 1) = .0404 5.34) a. P(X 5) = .2851 ˂ b. P(X = 5) = .1606 c. P(X ≥ 5) = .7149 d. P(X = 5 or X = 4) = .2945 5.38) a. P(X = 2) = .0176 b. P(X ≤ 1) = .9093 c. P(5 ≤ X ≤ 15) = .922 5.51) the mean of a probability distribution
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## This note was uploaded on 07/07/2008 for the course COB 191 taught by Professor May during the Fall '07 term at James Madison University.

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APS5 - Paul Donhauser COB 191: Business Statistics...

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