A pharmaceutical company is testing a new over-the-counter pain reliever. The researchers hypothesize that men will realize a shorter wait time for pain relief than
women. They compare the minutes until pain is relieved that is reported by both men and
women to test their theory.

Which inference procedure will best answer the question?

Select one:
a. Hypothesis Test for Difference in Two Sample Means
b. None of the other choices are valid
c. Confidence interval for Difference in Two Sample Means
d. Hypothesis Test for Difference in Means Matched Pairs
e. Hypothesis Test for One Sample Mean