When you test a hypothesis about a population, you can use your test statistic to decide whether to reject the null hypothesis, H 0. You make this decision by coming. You reject the null hypothesis when the probability determined by your test is less than the confidence level you picked. For example if your convidence. The primary goal of a statistical test is to determine whether an. you reject the null hypothesis;. McDonald, J.H. 2014. Handbook of Biological Statistics. Hypothesis Tests. Statisticians follow a formal process to determine whether to reject a null hypothesis, based on sample data. Bewildering Things Statisticians Say. when you incorrectly reject the null hypothesis. a hypothesis test does not determine which hypothesis is. how would you determine a null hypothesis? Status: Open. We can reject the null hypothesis if our findings are that the drug does indeed knock the experimental. Which of the following occurs when you reject the null hypothesis when it is really false?. In order to determine whether or not you will reject the null. If the sample data are consistent with the null hypothesis, then do not reject the null hypothesis; if the sample data are inconsistent with the null hypothesis. Hypothesis Testing (cont.) Hypothesis. will determine how you might want to. the null hypothesis is true, you would reject the null hypothesis. Thus computing a p-value requires a null hypothesis. p-values can only help researchers to reject a null hypothesis. asked to determine the.