Navigate to the website https://www4.stat.ncsu.edu/~boos/var.select/baseball.html and download the dataset (you can also import directly into Excel using https://www4.stat.ncsu.edu/~boos/var.select/baseball.txt). It contains information about MLB players from the 1991 -1 992 seasons Use this dataset to regress salary on batting average. Then answer the following questions a) On average, what is the change in salary associated with a.001 increase in a player's batting average? Is this relationship statistically significant? b) How well does batting average explain the variation in player salaries? Explain your answer. c) If you could include one additional explanatory variable in the regression model to help better predict a player's salary, choosing only from those available in this dataset, what variable would it be and why