Suppose that a random sample of size 64 is to be selected from a population with mean 40 and standard deviation 5. a) What is the approximate probability that x will differ from μ by more than 0.8? (Round your answer to four decimal places.)
Added by Colton K.
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8 Calculate Z: Z = (40.8 - 40) / (5 / √64) Z = 0.8 / 0.625 Z = 1.28 Show more…
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