4-130.The CPU of a personal computer has a lifetime that is exponentially distributed with a mean 4-130.The CPU of a personal computer has a lifetime thatis exponentially distributed with a mean lifetime of six years.You have owned this CPU for three
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4-130.The CPU of a personal computer has a lifetime that is exponentially distributed with a mean 4-130.The CPU of a personal computer has a lifetime thatis exponentially distributed with a mean lifetime of six years.You have owned this CPU for three
4-130.The CPU of a personal computer has a lifetime that is exponentially distributed with a mean
4-130.The CPU of a personal computer has a lifetime that
is exponentially distributed with a mean lifetime of six years.
You have owned this CPU for three years.What is the probability
that the CPU fails in the next three years?
4-131.Continuation of Exercise 4-130.Assume that your
corporation has owned 10 CPUs for three years,and assume
that the CPUs fail independently.What is the probability that
at least one fails within the next three years?
4-130.The CPU of a personal computer has a lifetime that is exponentially distributed with a mean 4-130.The CPU of a personal computer has a lifetime thatis exponentially distributed with a mean lifetime of six years.You have owned this CPU for three
一个个人电脑的CPU有一个六年的
服从指数分布的平均寿命.
你已经拥有这CPU三年.这个CPU在未来的三年中坏掉的几率是多少呢?
练习4-130的延伸.假如你的公司拥有的10个CPU已经使用了三年,又假如这些CPU会随机地坏掉.那么在未来三年中至少有一个CPU坏掉的可能性是多少?
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