3) A startup firm, Pocket International, has come up with a tiny programmable computer, NerdCom Mini Air, that sells for $49.99. The firm estimates that the programmable computers have an expected life that is exponential, with a mean of 24 months. The firm wants to estimate the probability that the NerdCom Mini Air will have a life that ends: a) after the initial 24 months of service. b) before the 24 months of service is completed. c) not before 48 months of service. Note: You could work out the problem by hand or use excel; in chapter 4S, section 4S.2 of the Stevenson text, reliability (finding the probability of functioning for a specified length of time) is covered with examples; chapters 4 & 4S Stevenson lecture power point slides 33 to 38 (chapters 4 & 4S lecture: 32.30 mins to 38.56 mins) cover reliability over time with examples.
3) A startup firm, Pocket International, has come up with a tiny programmable computer, NerdCom Mini Air, that sells for $49.99. The firm estimates that the programmable computers have an expected life that is exponential, with a mean of 24 months. The firm wants to estimate the probability that the NerdCom Mini Air will have a life that ends:
- a) after the initial 24 months of service.
- b) before the 24 months of service is completed.
- c) not before 48 months of service.
Note: You could work out the problem by hand or use excel; in chapter 4S, section 4S.2 of the Stevenson text, reliability (finding the probability of functioning for a specified length of time) is covered with examples; chapters 4 & 4S Stevenson lecture power point slides 33 to 38 (chapters 4 & 4S lecture: 32.30 mins to 38.56 mins) cover reliability over time with examples.
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