Outcomes and the Type I and Type II Errors · Exercise 13

When a new drug is created, the pharmaceutical company must subject it to testing before receiving the necessary permission from the Food and Drug Administration (FDA) to market the drug. Suppose the null hypothesis is “the drug is unsafe.” What is the Type II Error?

(a) To conclude the drug is safe when in, fact, it is unsafe.
(b) Not to conclude the drug is safe when, in fact, it is safe.
(c) To conclude the drug is safe when, in fact, it is safe.
(d) Not to conclude the drug is unsafe when, in fact, it is unsafe.

OpenStax, Introductory Statistics 2e · §9.2 Outcomes and the Type I and Type II Errors · Exercise 13