Read the study description below and answer the following questions: In a study examining the effect of room temperature on academic performance, researchers tested knowledge of basic statistical concepts for two groups of Introduction to Statistics students who took their exams in rooms with different temperatures. One group took their exam in a room heated to 70 degrees Fahrenheit and the second group in a room heated to 90 degrees Fahrenheit. The mean number of items students correctly answered in the 70-degree room (M=8.4 out of 10) was significantly greater than the mean number of items students correctly answered in the 90-degree room (M=3.7 out of 10), t(28)=12.67, p<.05.Identify the independent and dependent variables for this study. (The independent variable is what is being manipulated or compared, and the dependent variable is what is being measured.)