Question: 11.5 A study was made on the amount of converted sugar in a certain process at various temperatures. The data were coded and recorded as

11.5 A study was made on the amount of converted sugar in a certain process at various temperatures. The data were coded and recorded as follows:

Temperature, x Converted Sugar, y 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 8.1 7.8 8.5 9.8 9.5 8.9 8.6 10.2 9.3 9.2 10.5

(a) Estimate the linear regression line.

(b) Estimate the mean amount of converted sugar produced when the coded temperature is 1.75.

(c) Plot the residuals versus temperature. Comment.

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