A Company Studying the Productivity of Their Employees on a New

question 3

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) \(- .779\)

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