NUMERICAL ESTIMATE OF THE BENEFITS OF PORTFOLIO OPTIMIZATION? QUESTION 3 According to the Pew Research Center, women earned 82% of what men earned in 2017. The salary differential tends to be substantial in areas that are traditionally male dominated. The data below represents data from a survey of managers. The outcome variable is salary and the predictor variables are Firm Size, Years of Experience, gender and whether the manager has a graduate degree or not. gender_gap_data.c SV a.) Answer the following questions: QUESTION ANSWER What is the mean value of salary for males in the Males: sample? What is the mean value of salary for females in the sample? Females: What is the conditional probability that a male has a graduate degree? Male: What is the conditional probability that a female has a graduate degree? Female: Which predictor has the highest correlation with salary? What is the correlation between being a female and