IE 3302 Chapter : IE3302 Q4 CHEATSHEET
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Bernoulli"s distribution: repeated trials with given success and failure, each trial results in an outcome that maybe classified as a success or a failure, the probability of success remains constant, repeated trials are independent. The number x of successes in n bernoulli trials with given p. b(cid:4666)x;n,p(cid:4667)(cid:3404)(cid:4672)(cid:1866)(cid:1876)(cid:4673)(cid:1868)(cid:3051)(cid:1869)(cid:3041)(cid:2879)(cid:3051) 2 it has been found that 70% of all printers used on home computers operate correctly at the time of installation. What is the probability that at least 9 units operate correctly in each of the 5 months (i. e. january has at least 9 units, february also has at least 9 units, etc. 5 the spontaneous flipping of a bit stored in a computer memory is called a soft fail. soft fails are rare, averaging one per million hours per chip. However, the probability of a soft fail increases when the chip is exposed to alpha particles (helium nuclei), which occur naturally in the environment. Explain, based on the probability of this occurring.
