For Exercises 34–39, apply the Strategy for Building a Multiple Regression Model by performing the following steps, using level of significance :

  1. Step 1 Perform the test for significance of the overall regression.
  2. Step 2 Perform the tests for the individual predictors. If at least one of the predictors is not significant, then eliminate the variable with the largest -value from the model. Repeat Step 2 until all remaining predictors are significant.
  3. Step 3 Verify the assumptions.
  4. Step 4 Report and interpret your final model. Report and interpret the coefficients, the standard error of the estimate , and the adjusted coefficient of determination .

Question 13.139

healthinsurance

37. Health Insurance Coverage. We are interested in estimating , using and . Use the data in Table 9, containing a random sample of U.S. states. All data are in thousands.

Table 13.45: TABLE 9 Health insurance coverage
State Persons
covered		 Adults not
covered		 Children
not covered
Alabama 3,843 689 82
Arizona 4,958 1,311 283
Colorado 3,977 826 176
Georgia 7,688 1,659 314
Illinois 10,867 1,776 302
Kentucky 3,467 639 98
Maryland 4,836 776 137
Massachusetts 5,678 657 103
Michigan 8,928 1,043 116
Minnesota 4,675 475 104
Missouri 5,028 772 127
New Jersey 7,319 1,341 277
North Carolina 7,266 1,585 307
Ohio 10,181 1,138 157
Pennsylvania 11,108 1,237 203
South Carolina 3,553 672 112
Tennessee 5,111 809 94
Virginia 6,532 1,006 185
Washington 5,572 746 105
Wisconsin 4,995 481 63

13.3.37

See Solutions Manual.