1-4 Homework 1

1-4 Homework 1 - (1.444 + 1.431 + 1.463 + 1.45) / 4 = 1.45...

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1. 1) Before: 500 / (10 * 16 * 10 + 3,000 + 400) = .1 boxes/dollar After: 600 / (10 * 16 * 10 + 3,200 + 400) = .1154 boxes/dollar 2) (.1154 - .1) / .1 = .154 = 15.4% 2. (125 * 412) / [(6 * 40 *16) + (1500 + 1920) + (2840 * 10) = 1.444 (125 * 364) / (3200 + 3100 + 25,500) = 1.431 (125 * 392) / (3200 + 3100 + 27,200) = 1.463 (125 * 408) / (3840 + 3420 + 27,900) = 1.45
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Unformatted text preview: (1.444 + 1.431 + 1.463 + 1.45) / 4 = 1.45 3. 1) FR(%): 5 / 200 = .025 = 2.5% FR(N): total time = (1,000)(200) = 200,000 operating time = 200,000 (600 * 2 + 400 * 2 + 300) = 197,700 5 / 197,700 = . 000025 failures/hr MTBF: 1 / FR(N) = 39,540 hrs 2) FR(N) * 24 * 30 = .0182 bulb/hr 4. .975 = x 5 x = .9949 = 99.49%...
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This note was uploaded on 07/15/2008 for the course MGMT 3830 taught by Professor Li during the Summer '08 term at North Texas.

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