A Company Studying the Productivity of Their Employees on a New

Multiple Choice

A company studying the productivity of their employees on a new information system was interested in determining if the age $( X )$ of data entry operators influenced the number of completed entries made per hour (Y) . The regression equation is $\hat { y } = 14.374 - 0.145 x$ . If $s _ { x } = 14.04$ and $s _ { y } = 2.61$ , then the correlation coefficient between age and productivity is

A) $.779$
B) $- .236$
C) $.575$
D) $- .929$
E) $- .779$