pls help with hw question

Assume that the differences are normally distributed. Complete parts (a) through (d) below. Observation N LO CO 48.2 50.2 45.6 42.4 54.9 44.2 48.3 51.2 51.5 51.9 48.2 46.5 54.6 46.4 52.8 50.8 . . . . . (a) Determine d = X - Y, for each pair of data. CO Observation - 4.1 0.3 -2.2 -4.5 0.4 d -3.3 -1.7 -2.6 (Type integers or decimals.) Options (b) Compute d and Su- a= -2213 (Round to three decimal places as needed.) Sy = (Round to three decimal places as needed.)