If a hypothesis is rejected at 95% confidence, it
A) will not be rejected at 90% confidence
B) will also be rejected at 90% confidence
C) will sometimes be rejected at 90% confidence
D) None of these alternatives is correct.

Question

Quizplus · Accepted Answer

If a hypothesis is rejected at 95% confidence level, it means that there is only a 5% chance that the observed results occurred by chance. This rejection is a stronger conclusion than not rejecting the hypothesis. Therefore, if we lower the confidence level to 90%, the likelihood of accepting the hypothesis increases, but if the hypothesis was rejected at 95%, it will still be rejected at 90%. So, the correct answer is B, the hypothesis will also be rejected at 90% confidence level.

If a Hypothesis Is Rejected at 95% Confidence, It