Need it in 40 hours. Staistics HW using R programming language (spencer_m)

The instrucitons are written in the file and it's self-explanatory

Here are the two data files mentioned in the HW

brandPreference.txt

"Y" "X_1" "X_2"
64 4 2
73 4 4
61 4 2
76 4 4
72 6 2
80 6 4
71 6 2
83 6 4
83 8 2
89 8 4
86 8 2
93 8 4
88 10 2
95 10 4
94 10 2
100 10 4

muscleMass.txt

Y       X
82.0   71.0
   91.0   64.0
  100.0   43.0
   68.0   67.0
   87.0   56.0
   73.0   73.0
   78.0   68.0
   80.0   56.0
   65.0   76.0
   84.0   65.0
  116.0   45.0
   76.0   58.0
   97.0   45.0
  100.0   53.0
  105.0   49.0
   77.0   78.0