Use the date in ioanappdta for this exercise. The binary variable to be explained is approve, which is equal to one if a mortgage loan to an individual is approved. The key explanatory variable is white, a dummy variable equal to one if the applicant was white. The other applicants in the data set are black and Hispanic. To test for discrimination in the mortgage loan market, a model can be used: approve = Bo + lwhr'te + other factors + e 1. (10 points) If there is discrimination against non-white individuals, and the appropriate factors have been controlled for, what sign would you expect for B1? Why