The estimated regression model is given by y hat =b_(0) b_(1)x=25675.5 5321^(**)x. What is the interpretation of b_(1) ?
When mean score on teaching evaluation increases by 1, average annual salary increases by 25675.5 dollars.
When mean score on teaching evaluation increases by 1 , average annual salary increases by 5321 dollars.
When annual salary increases by a dollar, mean score on teaching evaluation increases by 5321.
When annual salary increases by a dollar, mean score on teaching evaluation increases by 25675.5 .