Questions Exertise 1 5.32 Also {categorical Independent Va riables) LI' IE Consider a regression study involving a dependent variable y, a quantitative independent vanable 22, and a categorical independent variable with two levels {level 1 and level 2). a. Write a multiple regression equation relating 1:2 and the categorical variable to y. 1. E[y) =50 +5121 2. E[y) 2,30 +523: 3. Em] = 50 +3151 +l3: 1!. E[y) : .80 + .3121 + .3232 - Select your answer - V Enter the values of dummy variable :21 that are used to indicate the two levels of the qualitative variable. If your answer is zero, enter \"0". Level 2 31 Level 1 \\:| E I). what is the expected value of 1,! corresponding to level 1 of the categorical variable? 1. E[y) =50 +3121 2. E[y) 2,30 +523: 3- Em] = .30 +1915; +132 4. E[y) = .80 + .3121 + .3232 - Select your answer - V 15.? Practice Assignment 15.]r Practice i7 Questions ' Exercise 15.32 Algo (Categorical Independent Variables} Consider a regression stud}.r involving a dependent variable y, a quantitative independent variable 32, and a categorical independent variable with two levels (level 1 and level 2). a. Wlite a multiple regression equation relating 22 and the categorical variable to y. 1- Eh!) = 30 + 13131 2- Eh!) = 30 + 19232 3- ER!) = .30 +1a=1 +132 EU) = 30 + 9131 + .3232 Select your answer - v Enter the values of dummyr variable a1 that are used to indicate the two levels of the qualitative variable. If your answer is zeror enter \"0". P 31 Level 1 \\:| E Level 2