Observation       Xi         Yi 1                        51.0       52.1 2                       50.5      50.6 3                       49.4      54.3 4                       47.5       52.4 5                       52.5       53.3 6                       42.8      46.3 7                       53.4      53.6 8                       51.9       52.7     ​(a) Determine di=Xi−Yi for each pair of data. ​(b) Compute d and sd. (c) Find the p value

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