The 'null hypothesis' is that:
A) there is a statistical difference and therefore the hypothesis is rejected.
B) the hypothesis is not worth testing.
C) the hypothesis has been rejected in error.
D) there is no statistical difference and therefore the hypothesis is retained.

Question

Quizplus · Accepted Answer

The null hypothesis is the hypothesis being challenged or rejected. The default position (null hypothesis) is that there is no statistical difference. We frequently set the probability statistic at .05 (2.5% at either end of the distribution). Thus, a score falling outside of this is deemed significant and we reject the null hypothesis: that is, we assume a probability of difference.

The 'Null Hypothesis' Is That