Answer :

S= 140/18= 7.77, SD =2.58;
H=1208/18= 67.11, SD= 4.54

(5,63), (7,61), (4,60), (6.5,64), (12,77), (9,72), (8,66),(4,65), ((9,70), (8,69),(7.5,65),(4,62), (6.5,65), (6,66), (11.5,67),(10.5,71), (10.5,74),(11,71)

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