A study was done to establish whether or not a relationship exists between IQ scores of identical twins. What is the null hypothesis? What is the alternative hypothesis? X Twin A X2 Y Twin B Y2 (X)(Y) 106 115 127 117 85 89 73 61 102 98 85 100 97 98 110 108 X = (X)2 = X2 = Y = (Y)2 = Y2 = XY = n (number of paired values) =