Question: Explain the difference between the standard error formulas in equations (7.2) SE(X) = / n and (7.3). Why is Equation (7.3) SE (X) =

Explain the difference between the standard error formulas in equations (7.2) SE(X̅) = σ / √n and (7.3). Why is Equation (7.3) SE (X̅) = s/√n the one necessarily used in real situations?

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