Question: A data set has n = 20. 20i=1 xi = 8.552, 20i=1yi, = 398.2, 20i=1 x2i, = 5.196. 20i =1 y2i = 9356 and 20i=1

A data set has n = 20.∑ 20i=1 xi = 8.552, ∑20i=1yi, =
398.2, ∑20i=1 x2i, = 5.196. ∑20i =1 y2i = 9356 and
∑20i=1 = 216.6. Calculate ^β0, ^β1, and ^σ2. What is the fitted value when x = 0.5?

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