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1. (9 pts) True or False 1) Given the Simple Linear Regression Model: y = 61 + )6in + \":37, ua; is an observed error term. 2) The residuals 111' are always positive. 3) The population model: y = [31 + )6ng + m: is linear in its parameters such as 51 and )32. 4) The population model: ya: = 51 + )8ng + a; is linear in its parameters such as )31 and g. 5) The error term m are constant. 6) If the correlation between the depend variable y and independent variable a: is positive, the slope of the simple linear regression model is positive