Sarin Employment helps midsized to large companies fill management and high-level technical positions. The file Sarin contains data for a sample of job placements that the company has facilitated. The data show the number of days it took to fill the job and the fee billed to the client.
a. Construct a scatter plot showing fees as the dependent variable. What is the apparent relationship between the two variables?
b. Calculate the correlation coefficient and test to determine whether there is a statistically significant linear relationship between the two variables. Use an alpha = 0.05.

c. Develop a regression model with fees charged as the dependent variable. What percentage of the variation is explained by the number of days required to fill the position?