If the p-value is less than α in a two-tailed test,
A) the null hypothesis should not be rejected.
B) a one-tailed test should be used.
C) no conclusion should be reached.
D) the null hypothesis should be rejected.

Question

Quizplus · Accepted Answer

If the p-value is less than α in a two-tailed test, it means that the observed effect is unlikely to have occurred by chance alone. Therefore, we reject the null hypothesis and conclude that there is a statistically significant difference between the two groups.

If the P-Value Is Less Than α in a Two-Tailed