1. (60 points total) The data set A10Q1.txt contains a predictor variable x and then a response variable y. There are 50 observations. a. (20 points) Perform simple linear regression with the original variables. Do there appear to be problems with nonconstant variance, nonnormality, and nonlinearity? Explain your answer and include the scatterplot. b. (10 points) Use PROC 'I'RANSREG to estimate the value of 2' for a Box-Cox A transformation. Give either the value of A or the graph from SAS. c. (30 points) Use the transformation on y suggested in part b. Does this fix the problems you saw in the original data? Explain your answer and include the scatterplot