Question

N = 28 Mean =  143.00 StDev =  21.00 SE Mean =   3.97 95% Upper Bound = 149.76 T = -1.76 P = 0.045

What conclusion could be drawn at the level of significance α = .05? a. Accept the null hypothesis because the P-value is less than the level of significance. b. Fail to reject the null hypothesis because the P-value is less than the level of significance. c. Reject the null hypothesis because the P-value is less than the level of significance. d. No conclusion can be drawn without knowing the 95% lower bound. What is the test statistic, and what is its value? What specific part of the output allowed you to make your conclusion?

Answer 1

If p -value is less than level of significance , then null hypothesis is rejected.

in this case, p-value=0.045

Since 0.045<0.05, We reject null hypothesis.

Option C