Part 1: A random sample of cross-section, observational data was collected. The vari- ables X; and Y, are measured in "units." Consider the following sample regression function for model 1. Note the standard errors for the parameter estimates appear in parentheses: YA = 7.00 - 1.00 X; (1.00) (0.30) R2 = 0.04 R- = 0.04 N = 2,5005) Create a 95% confidence interval for 81. (5 points) 6) Interpret the R2 in a sentence. Does the model exhibit "good fit?" Why or why not? (5 points)