9) A professor is interested in finding out if providing a different kind form of study guide before exams will help his students do better on the exams. What is the research hypothesis? A) The new study guide will have a negative effect on students' exam performance B) The new study guide will improve students exam performance C) The new study guide will make no difference in student's exam performance D) The new study guide will either help or hurt exam performance 10) Suppose that a researcher only wants to know if treating patients with a new flu drug affects their symptoms. Would this be a one tailed or two-tailed test and why? A) Two-tailed because the researcher is only looking for a difference caused by the flu drug B) One-tailed because the researcher is only interested to see if the flu drug makes people better C) One-tailed because the researcher only looks at the flu drug and doesn't take other factors into account D) Two-tailed because the researcher will have to study people who take the drug and people who don't take the drug