3. Using "Bankruptcy" project dataset A. perform a two-sample t-test for the variables below comparing healthy and distressed firms: gempl = "Employee Growth Rate" opita = "Operating Income to Assets" Explain results. Note: two sample t-test was discussed in Module 2 and Module 4 lecture notes B. perform logit analysis predicting probability of Bankruptcy. (a) Estimate logit model with the following explanatory variables: tdta, gempl, opita, invsls, lsls. Discuss the sign of every coefficient in the model. Is it as expected from finance theory? (c) Find the percentage of correctly predicted cases for healthy and distressed firms