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統計學1題

Suppose that the namber of miles that an electric car battery functions has mean u and standard deviation 100.Using the central limit theorem

approximate the probability that the average number of miles per battery obtained from a set of n batteries will differ from u by more than 20 if(a) n =10.
Using the central limit theoremz=(x-mean)/[SD/sqrt(n/8)]=-20/(100)*sqrt(n/8)=-0.22361P(u*-u

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    何謂central limit theorem central limit theorem matlab standard deviation battery probability number of miles electric car battery namber SD/
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