i. The first step in testing a hypothesis is to state the decision rule. ii. To prevent bias, the level of significance is selected before setting up the decision rule and sampling the population.
iii. The fifth and final step in testing a hypothesis is taking a sample and, based on the decision rule, deciding if the null hypothesis should be rejected.
A) (i), (ii), and (iii) are all correct statements.
B) (i) is a correct statement but not (ii) or (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (i) and (ii) are correct statements but not (iii).
E) (ii) and (iii) are correct statements but not (i).

Question

Quizplus · Accepted Answer

The level of significance is indeed selected before setting up the decision rule to prevent bias, and the final step involves making a decision based on the sample and decision rule. However, stating the decision rule is not the first step in hypothesis testing; the first step is usually to state the null and alternative hypotheses.

I the First Step in Testing a Hypothesis Is to State