Suppose That a Researcher Wants to Know If a New

Multiple Choice

Suppose that a researcher wants to know if a new flu drug affects people, either by making them better or worse. Would this be a one-tailed or two-tailed test and why?

A) One-tailed because only one issue is discussed-the drug
B) One-tailed because there is only one interaction, which is between the flu and the drug
C) Two-tailed because there are two variables-whether or not people take the drug and how their flu is affected
D) Two-tailed because there is no predicted direction of the effect of the drug