Question 7 3 points Save Answer The beta estimate for the dummy variable for age (1 for those bigger than age 78 and 0 for those head(Credit) ID Income Limit Rating Cards Age Education Gender Student Married Ethnicity Balance 1 1 14.891 3606 283 2 34 11 Male No Yes Caucasian 333 2 2 106.025 6645 483 3 82 15 Female Yes Yes Asian 903 3 3 104.593 7075 514 4 71 11 Male No No Asian 580 4 4 148.924 9504 681 3 36 11 Female No No Asian 964 5 5 55.882 4897 357 2 68 16 Male No Yes Caucasian 331 6 6 80.180 8047 569 4 77 10 Male No No Caucasian 1151 Choose the best 4 parameters to predict credit balance and provide the equation