A sales manager was interested in determining if there is a

A sales manager was interested in determining if there is a relationship between college GPA and sales performance among salespeople hired within the last year. A sample of recently hired salespeople was selected the number of units each sold last month recorded. The regression results are shown below.

The regression equation is

Units Sold = - 0.48 + 7.42 GPA

Predictor    Coef SE Coef      T      P

Constant   -0.484    3.256 -0.15 0.884

GPA         7.423    1.044   7.11 0.000

S = 1.57429   R-Sq = 78.3%   R-Sq(adj) = 76.8%

Based on these results, at = .05 we will

A. Reject the null hypothesis.

B. not reject the null hypothesis

C. conclude that there is no significant relationship between GPA and sales performance.

D. both A and C

E. both B and C

Solution

As we can see, the P value for the coefficient of GPA is 0.000 < 0.05.

Thus, OPTION A: Reject the null hypothesis.