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2 12 p Frost resistance investigations of a kind of apples gave the following values 8 8 1 in for the ability S to survive after 12 hours frost influence at the values t t of the temperature T in C t in C 10 9 8 7 6 5 4 3 2 1 8 in 13 4 14 8 16 5 17 1 20 0 22 8 28 2 31 7 50 8 97 6 b 5 p Now assume a nonlinear relation of the kind s a Transform z to linearize the approach 8 a b 2 Transform the data and plot the points 28 on a scatter plot Do they approximately lie on a straight line Using a linear regression of the transformed data determine the parameters a and b Plot the estimated regression function along with the original data on a scatter plot How do you evaluate the fit You may use the following sums Et 55 1 385 Es 312 9 Es 15789 63 Ets 1160
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