The null hypothesis is rejected whenever
A) past studies prove it to be wrong.
B) there is a low probability that the obtained results could be due to random error.
C) there is a high probability that the obtained results could be due to random error.
D) the researcher is convinced that the variable is ineffective in causing changes in behaviour.

Question

Quizplus · Accepted Answer

The null hypothesis is rejected when there is a low probability that the obtained results could be due to random error. This probability is usually set at 5% or less, which means that if the results are unlikely to occur by chance with a probability of 5% or less, the null hypothesis can be rejected.

The Null Hypothesis Is Rejected Whenever