Reanalyze the data from the study of urinary calcium during parenteral nutrition (Problems 2.6, 3.8, and 5.5; data in Table D-5, Appendix D) using variable selection methods. Of the four potential...

Reanalyze the data from the study of urinary calcium during parenteral nutrition (Problems 2.6, 3.8, and 5.5; data in Table D-5, Appendix D) using variable selection methods. Of the four potential variables, which ones are selected? Do different selection methods yield different results?

Table D-5