The 0 otherwise ' Consider the model y: [30 + [31x1 + 62x2 + [53x3 + e, where x1 is a quantitative variable and x2 and x3 are dummy variables describing a qualitative variable at three levels using the coding scheme x2 ={ 0 otherwise 1 if leve|2 {1 iflevelS an X = resulting least squares prediction equation is =41.2 + 2,4x1 +1()'6>= (no + l32 + [33) +u1x1 Choose the correct equation for x2 = 1 and X3 = 0. ":3 A. E= (no '45) +Bix1 C13 0- E(y)= I50 +999 ":1 D. E Consider the model y: (30 + [51x1 + [52x2 + [53x3 + e, where x1 is a quantitative variable and x2 and x3 are dummy variables describing a qualitative variable at three levels using the coding scheme x2 = { 0 otherwise 1 if leve|2 {1 iflevel3 andx = resulting least squares prediction equation is =41.2 + 2.4x1 +10.6x2 +16.6x3. Complete parts a and b. v -. hUl kvo v2 ' v3} 'v1ni b. What are the least squares prediction equations associated with level 1, level 2, and level 3? The equation for level 1 is = + x1. The equation for level 2 is 9 = + x1 The equation for level 3 is v = + x1 Choose the correct graph of these three lines below. ('3 A. ('3 B. 0 o. my L2 a . .Av L2 a . , Q , Q , L1 1\" / L1 1\" / L2 ::: x )' X )' > E, 1 > E