The data attached contains information on customers' ratings of your product (CustRate), on a scale of 1 to 100, along with demographic information. The demographic information includes: income (Inc), age (Age), education (Educ), and marital status (Marr). The last variable equals one if the respondent is married and zero otherwise. Assume the data-generating process can be written as:CustRate_i=+₁Inc_i+₂Age_i+₃Educ_i+₄Marr_i+U_i.