Derive the formula σ β ^ 1 2 = σ 2 ∑ i = 1 n ( x i − x ¯ ) 2 by using Equation 7.34.

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Chapter 7, Problem 22SE

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Derive the formula σβ^12=σ2∑i=1n(xi−x¯)2 by using Equation 7.34.

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