A researcher is investigating program outcomes for a state social agency. Two institutions provide program services, Facility A and Facility B. The researcher needs to examine whether the program participants differ. Facility A has 125 participants, their average age is 16.5, and the standard deviation is 1.5. Facility B has 85 participants, their average age is 17, and the standard deviation is 1.9. The researcher has set an alpha at 99%. Question: Is this a one or a two-tailed test? Group of answer choices 2-tailed 1-tailed