Consider the following to answer the question(s) below:
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 and the number of units each sold last month was recorded. Relevant data appear in the table below.
Below are the scatterplot, regression results, and residual plots for these data.
-The correct null hypothesis is
A) There is a strong relationship between GPA and sales performance.
B) There is a relationship between GPA and sales performance.
C) β1 ≠ 0
D) There is no relationship between GPA and sales performance, and β1 = 0.
E) There is a relationship between GPA and sales performance, and β1 ≠ 0.

Question

Consider the following to answer the question(s) below:
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 and the number of units each sold last month was recorded. Relevant data appear in the table below.
  Below are the scatterplot, regression results, and residual plots for these data.    
-The correct null hypothesis is
A) There is a strong relationship between GPA and sales performance. 
B) There is a relationship between GPA and sales performance. 
C) β1 ≠ 0 
D) There is no relationship between GPA and sales performance, and β1 = 0. 
E) There is a relationship between GPA and sales performance, and β1 ≠ 0.

Quizplus · Accepted Answer

The null hypothesis states that there is no relationship between college GPA and sales performance, which can be represented as β1 = 0. Therefore, the correct choice is D.

Consider the Following to Answer the Question(s) Below