A Company Studying the Productivity of Its Employees on a New

Multiple Choice

A company studying the productivity of its 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 $\hat { y } = 14.374 - 0.145 x$ .
Suppose the actual completed entries per hour for an operator who is 35 years old was 8 . The residual is

A) $- 1.3$
B) $2.6$
C) $- 3.5$
D) $1.3$
E) $- 2.2$