Use the Following Information for Questions
Observation
$\chi$ ² with 8 Degrees of Freedom

Use the following information for questions
Observation

The numbers in each cell represent the sales level in thousands of
dollars.
-Which of the following is/are true? 1-The appropriate null hypothesis would state, "Advertising levels have no effect on sales." 2-The appropriate null hypothesis would state, "There is an increase in the sales level due to an increase in the intensity of the advertising effort." 3-The appropriate statistic to test the null hypothesis would be $\chi$ ² with 8 degrees of freedom.

A) 1
B) 2
C) 3
D) 1 and 3
E) 2 and 3