2.2 It has been suggested that a sole ownership may increase the probability of getting a successful business. Thus, you add a dummy variable, Sole, into the regression model. The results (standard errors in parentheses below coefficient estimates) are: Pr(Si,t=1Exi,S0le)=(2.26+2.74Exi+0.71Solei)(0.17)(0.44)(0.08) From the above estimation results, explain whether the coefficient on Sole is statistically significant at the 5% level. When Ex is 0.3, what is the difference in the probability of Success between a sole ownership and not having a a sole ownership