It is valid to label a program as ineffective when
A) a statistical comparison between program and comparison groups is non-significant.
B) statistical comparisons between randomly-assigned program participants and a control group are non-significant and statistical power is 95%.
C) the program lacks common sense plausibility but the statistical test is significant (i.e. p

Question

It is valid to label a program as ineffective when
A) a statistical comparison between program and comparison groups is non-significant.
B) statistical comparisons between randomly-assigned program participants and a control group are non-significant and statistical power is 95%.
C) the program lacks common sense plausibility but the statistical test is significant (i.e. p < .05).
D) statistical comparisons between randomly formed program and control groups are non- significant and statistical power is less than 5%.

Quizplus · Accepted Answer

When statistical comparisons between randomly-assigned program participants and a control group are non-significant and statistical power is 95%, it suggests that the study was well-powered to detect an effect if there was one, thus supporting the conclusion that the program is ineffective.

It Is Valid to Label a Program as Ineffective When