Im trying to solve question 2 from chapter 12 from my textbo

I\'m trying to solve question 2 from chapter 12 from my textbook, \"Applied Regression Analysis and Other Multivariable Methods,\" and I\'m unsure how to go about it. I\'m certain it requires dummy variables but I don\'t know how to set that up especially while using SAS as my class requires.

Solution

please upload a photocopy of the questions and you know there are many books having the same name. So its better to ulpload the orihinal question then I will explain you what are the ways to solve it. In sas you can use dummy vfariables easily.