You carry out a study to investigate the decline in cod populations off the coast of Canada. To carry out a hypothesis test, you must decide which sample size should be used. Which factors affect your decision?

Question

Quizplus · Accepted Answer

The sample size in a study is influenced by the significance level ($\alpha$), the power of the test (1-$\beta$), and the effect size. The significance level determines the probability of making a Type I error, the power relates to the probability of avoiding a Type II error, and the effect size indicates the magnitude of the difference or relationship that the study aims to detect. All these factors are crucial in determining the appropriate sample size for a study.

You Carry Out a Study to Investigate the Decline in Cod