A study was conducted that measured the total brain volume (TBV) (in mm³) of patients that had schizophrenia and patients that are considered normal. The tables in question 3 contain the TBV of the normal patients and the TBV of schizophrenia patients ("SOCR data oct2009," 2013). Compute a 90% confidence interval for the difference in TBV of normal patients and patients with Schizophrenia. Show your work, including the critical value, margin of error, results statement, and interpretation of results.