146 An economist wants to compare the mean dollar amounts owed by credit card customers with delinquent accounts (accounts that have not been paid). The economist decides to compare using the categories of low income, middle income, and high income. The economist then decides to use middle income as the baseline for comparison. The equation for Ely high income) = Bo+ B(0) + B2(1) = B0 + B2 This is interpreted as O Bo is the intercept for both Bo and B2 and they are summarized to indicate the mean value of the dollar amounts owed by high paying customers. O Bo is the intercept for all categories and B2 is the difference between the intercept and the expected dollar amount owed by high income customers. O Bo is the expected dollar amount owed by middle income customers and B is the difference between the mean dollar amount owed by high income customers and middle income customers. O Bo is the expected dollar amount owed by high income customers and B2 is the difference between the mean dollar amount owed by high income customers and middle income customers. 1119