Annual high temperatures in a certain location have been tracked for several years. Let X represent the year and Y the high temperature. Based on the data shown below, calculate the regression line (each value to at least two decimal places). ŷ X 4 5 6 7 8 9 10 11 12 y 13.9 17.6 19.8 20.2 24.3 26.1 29.6 3 31.8 35.4 X +

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