7. Interpret the slope in the following regression line: = 0.62 1.8() a. For every one unit increase in x, there is a 1.8 increase in y. b. For every one unit increase in x, there is a 0.62 increase in y. c. For every one unit increase in x, there is a 1.8 decrease in x. d. For every one unit increase in x, there is a 0.62 increase in x.

8. Interpret the slope in the following regression line: = 316 0.3() a. For everyone unit increase in y, there is a 316 decrease in x. b. For everyone unit increase in x, there is a 0.3 decrease in y. c. For everyone unit increase in y, there is a 0.3 decrease in x. d. For everyone unit increase in x, there is a 316 decrease in y.

9. Given this regression equation, = 0.62 1.8(), if x is 2, what is ? a. -2.17 b. 2.06 c. -2.97 d. -3.14

10. Given this regression equation, = 316 0.3(), if x is 10, what is ? a. -319 b. -235 c. -316 d. -3