Formulas you may need Independent Samples t-test: Related Samples t-test: s2p = (SS1 + SS2) / (df] + df2) D SM1-M2" V s2p1 + s2p2 t= t = ( X , - X2 ) df = n -1 SM1- M2 df =(n1-1) + (n2- 1) Dr. Smith believes being raised by a depressed parent alters optimism. To test their hypothesis, Dr. Smith has two groups of students (five non- depressed and five depressed) take a measure of optimism and analyzes their scores. Given the following data, calculate t._ **ROUND AND REPORT YOUR ANSWER TO TWO DECIMAL PLACES!** Non-depressed: M1= 24, SS1 = 178 Depressed: M2 = 12, SS2=122