1) Consider the following probit model: Pr(deny=1P/Ratio,black)=(2+3P(Jratia+0,7black), Where P/ ratio is the payment-to-income ratio. a) What is the effect of increasing the P/1 ratio from 0.3 to 0.4 for a white person? b) A black mortgage application has a P/I ratio of 0.35 , What is the probability that her application will be denied