Table 13.17 shows results of fitting a regression model to data on salaries (in dollars) of about 35,000 college professors. Four predictors are categorical (binary), with dummy variable defined in...

Table 13.17 shows results of fitting a regression model to data on salaries (in dollars) of about 35,000 college professors. Four predictors are categorical (binary), with dummy variable defined in parentheses. Write a short report, interpreting the effects of the predictors.