14. A leastsquares regression line of 3; on a: is given by g; = 1.5 + 1.33;. The residual of an observation with 9: =
14. A leastsquares regression line of 3; on a: is given by g; = 1.5 + 1.33;. The residual of an observation with 9: = 2 and y = 4 is? 15. For the same data in the previous question, suppose :1: is measured in US dollars. If the unit of a: is changed from US dollars to euros (1 euro = 1.3 US dollars), the slope of the new regression line is
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