Author Question: Refer to Exhibit 7-5. What are the degrees of freedom in this case? a. 39 c. 19 b. 38 d. ... (Read 36 times)

joesmith1212 · **on:** Jun 20, 2018

Refer to Exhibit 7-5. What are the degrees of freedom in this case?

a. 39
c. 19
b. 38
d. 18

Question 2

Refer to Exhibit 7-4. The researchers can conclude that:

a. there is no statistically significant evidence that students who use the new ACT training will improve their ACT scores.
b. the evidence suggests the new training improves ACT scores.
c. the evidence suggests the new ACT training decreases ACT scores.
d. none of these are true.