SmithExam2 - OliviaSmith x P(x) x*P(x) (xmu)^2*P(x) 0.06...

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x P(x) x*P(x) (x-mu)^2*P(x) 0 0.02 0 0.06 1 0.28 0.28 0.17 2 0.61 1.22 0.03 3 0.09 0.27 0.14 1.77 0.4 Mean = 1.77 Variance= 0.4 Standard Deviation= 0.63 a) Exactly 3 refrigerators is:  0.09 b) At least two refrigerators is:  0.7 c) Fewer than 3 refrigerators is: 0.91 d) The mean of the distribution is: 1.77 e) The standard deviation is: 0.63 x P(x) x*P(x) (x-mu)^2*P(x) 0 0.248423 0 1 0.371207 0.371 0.03 2 0.249605 0.499 0.12 3 0.099459 0.298 0.29 4 0.026008 0.104 0.19 5 0.004664 0.023 0.06 6 0.000581 0.003 0.012827799 7 0.000050 0.000 0 8 0.000003 0.000 0 9 0.000000 0.000  0.000005470  10 0.000000 0.000  0.00000010  1.300 0.71  Mean=   1.30  Variance= 0.711164 Standard Deviation= 0.843306 a) Exactly 2 become delinquent: P(2): 0.249605 b) 3 or 4 become delinquent: 0.125468 c) 1 becomes delinquent: 0.371207 d) The mean of the distribution is: 1.300000 e) The standard deviation is: 0.843306 x P(x) x*P(x) (x-mu)^2*P(x) 0 0.000002 0.000
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This note was uploaded on 07/20/2010 for the course MATH 251 taught by Professor Whalen during the Summer '10 term at New Hampshire Community Technical Colleges.

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SmithExam2 - OliviaSmith x P(x) x*P(x) (xmu)^2*P(x) 0.06...

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