Assume that the differences are normally distributed. Complete parts (a) through (d) below. Observation 1 2 3 4 5 6 Xi 45.4 43.7 45.8 44 0 52.7 50.5 52.5 Yi 46.7 45.7 47.2 50.5 45.5 52.3 54.6 54.4 (a) Determine dj = X; - Y; for each pair of data. Observation 0 0 (Type integers or decimals.) (b) Compute d and sa. a= (Round to three decimal places as needed.) so =(Round to three decimal places as needed.) (c) Test if Hy