77} 7 77 777777 7771.777777777771} '7777777 777K777777 77.} 77 7770777 7777 7 7 7 777 7777 77 777777 777 77 ' Make sure you identify if it is positive or negative (explain why it is + or- -). b) Run the regression model. Do the signs of the coefficients coincide with your intuition? Identify the ones that do not. c) Which variables are statistically significant at the 5% level? d) What other variables can you think of that might be an explanatory variable in the model