Question
In a study relating the degree of warping, in mm, of a copper plate (y) to...
In a study relating the degree of warping, in mm, of a copper plate (y) to temperature in °C (x), the following summary statistics were calculated: n=40, x¯=26.36, y¯=0.5188,∑ni=1(xi−x¯)2=98,775, ∑ni=1(yi−y¯)2=19.55,∑ni=1(xi−x¯)(yi−y¯)=766.94.
Compute the least-squares line for predicting warping from temperature. Round the answers to four decimal places.
Predict the warping at a temperature of 40°C. Round the answer to three decimal places.
At what temperature will we predict the warping to be 0.5 mm? Round the answer to two decimal places.
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