Suppose that the distribution of the lifetime of a car battery producedby a certain car company is well approximated by a normal distribution with a meanof 1.2*103hours and variance 104. What is the approximate probability that abatch of 100 car batteries will contain at least 20 whose lifetimes are less than 1100hours?
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Home » Mathematics » Suppose that the distribution of the lifetime of a car battery producedby a certain car company is well approximated by a normal distribution with a meanof 1.2*103hours and variance 104.