Question

22. A study examines the use of Glucotrol and depression and uses an alpha of 0.05 and a power of 0.80   The researchers report a Chi-square of 109.1 with a p value of 0.25. You know this means:

		The researchers made a type II error.
		The researchers did not find a clinically significant association.
		The researchers found a statistically significant difference.
		The researchers should reject the null.

Answer 1

Here we have

   = level of significance = 0.05

p-value = 0.25

Decision rule : If p-value < we reject the null hypothesis otherwise we fail to reject the null hypothesis , otherwise we fail to reject the null hypothesis

Our p-value = 0.25 > 0.05

Decision : we fail to reject the null hypothesis

Conclusion is there is no significant association

So answer is The researchers did not find a clinically significant association