X=418,Y=1088,XY=75912,X2=29136

10882913641875912/ 6291364182=339.652

6759124181088/6.29136(418)2=7.478

y=a+bx=339.652+7.478x

when x=68 inches and x=72 inches.

y=339.652+7.478(68) =168.852 = 169lb

y=-339.652 + 7.478(72) =198.764 = 199lb

b) Which of the following is the graph of the regression line for this data?

b) Which of the following is the graph of the regression line for this data? 200 l ' 200 a) 195 l b) 195 190 . 19 . 185 I 155 _ 1m 130 my: 175 1 weight 175 17" | in lb 17 165 I 155 6 160 . 160 155 I 155 150 'l I I I I I l I 150 . , , . I 66 67 68 69 70 71 72 73 66 67 68 69 70 71 height in inches 200 c) 195 d) 190 O 135 yveight _ 1;": In lb | Ilvelght m | In lb I 165 O I 160 155 155 150 j l I I I I I I 150 I I l I 66 67 68 69 7O 71 72 73 66 67 65 69 70 71 height in inches height in inches