Consider the example of a credit card company that has a database of information provided by its customers when they apply for credit cards. an analyst has created a multiple regression model for which the dependent variable in the model is credit card charges accrued by a customer in the dataset over the past year (y), and the independent variables are the customer's annual household income (x1), number of members of the household (x2), and number of years of post-high school education (x3). click on the datafile logo to reference the data. (a) estimate the corresponding simple linear regression with the customer's annual household income as the independent variable and credit card charges accrued by a customer over the past year as the dependent variable. x1 represents customer's annual household income. if required, round your answers to three decimal places. for subtractive or negative numbers use a minus sign even if there is a sign before the blank.