Assume that the differences are normally distributed. Complete parts (a) through (d) below. Observation 1 2 3 4 5 6 7 8 Upper X Subscript iXi 43.343.3 47.547.5 50.350.3 46.546.5 48.448.4 46.946.9 43.643.6 52.252.2 Upper Y Subscript iYi 47.447.4 49.249.2 52.652.6 50.350.3 48.548.5 46.746.7 47.747.7 51.751.7 Question content area bottom Part 1 (a) Determine d Subscript i Baseline equals Upper X Subscript i Baseline minus Upper Y Subscript idi=XiYi for each pair of data. Observation 1 2 3 4 5 6 7 8 d Subscript i negative 4.14.1 negative 1.71.7 negative 2.32.3 negative 3.83.8 negative 0.10.1 0.20.2 negative 4.14.1 0.50.5 (Type integers or decimals.) Part 2 (b) Compute d overbard and s Subscript dsd