Consider an x distribution with standard deviation σ = 40.
Consider an x distribution with standard deviation σ = 40. (For each answer, enter an exact number.)
(a) If specifications for a research project require the standard error of the corresponding x bar distribution to be 2, how large does the sample size need to be?
n =
(b) If specifications for a research project require the standard error of the corresponding x bar distribution to be 1, how large does the sample size need to be?
n =
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