LAB Data Analysis: independent samples t-test 1. Research Question: Do patients with Traumatic Brain Injury (TBI) take longer to recognize and speak a word than people with no brain injury? 2 points a. What is the IV and its corresponding levels/conditions? Conditions - Participants with and without TBI b. What is the DV as operationally defined (measured)? Response times with speaking and recognizing c. State the null hypothesis: | d. State the alternative hypothesis: 2. Conduct an independent samples t-test on the data and report your findings: 3 points a. Can homogeneity of variance be assumed? Y/N How do you know? b. What is the mean difference between the groups? C. What is the appropriate degrees of freedom? d. What is your computed (obtained) t-value? e. What is the p-value? f. Compare the p-value to a =.05. Is the p-value higher or lower? g. Should you accept or reject the null hypothesis, and why? 3. Follow the interpretation instructions found in the tutorials to write a full APA-formatted results paragraph for your t-test