Business performance can be affected various economic factors. Data on Autozone revenue (in million $) and disposable income (in million $) are collected in an effort to study the relationship between company revenue and industry revenue. See data file Revenue 1. Estimate a simple linear regression using Autozone revenue as the dependent variable and disposable income as the independent variables

1. Report the estimated regression line.
2. Test the slope coefficient to determine the validity of the model. Use =0.05.