A researcher conducts an experiment on a new drug for enhancing memory and the researcher concludes that the drug is effective. However, by chance alone the many participants having excellent memories were placed in the experimental group. This may lead to a:

Question

Quizplus · Accepted Answer

A Type I error occurs when a researcher incorrectly rejects a true null hypothesis, which in this case would mean concluding the drug is effective when it might not be, due to the biased sample.

A Researcher Conducts an Experiment on a New Drug for Enhancing