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you plan to build a 90% confidence interval estivof the mean of a large pop6.you want...

you plan to build a 90% confidence interval estivof the mean of a large pop6.you want z margin error no longer than 6. you estimate the poly standard deviation to be 54. how large a sample is needed

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Answer #1

We Knota that Un 2. given 2 -645 X 54 Nown - 8883) 2 805

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