A company assembles 10 computer chips to make an electronic paper unit,
a) there is 95% of component chips are good, what is the chance that the paper will work if all 10 chips must work for the paper to work?
b) there is 95%of component chips are good, what is the chance that the paper will work if at least 9 chips must work for the pager to work?
probability 的問題 ! 急!--statistic
2007-06-14 11:36 pm
回答 (1)
2007-06-15 4:39 am
✔ 最佳答案
(a) P(10 good) = 0.95 ^ 10 = 0.599 (3 sig fig)(b) P(at least 9 good)
= P(10 good) + P(9 good)
= 0.599 + 10 * 0.95 ^ 9 * (1 - 0.95)
= 0.599 + 0.315
= 0.914
收錄日期: 2021-04-14 01:01:08
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