Answer
(a) See graph.
(b) $y = 3.0625x - 56.213$
(c) Yes, $185.7$ lb.
Work Step by Step
(a) We can put the data in a scatterplot as shown in the figure.
(b) The regression line can be found as $y = 3.0625x - 56.213$ as shown in the figure together with the data.
(c) Yes, it looks like the regression line reasonably capture the trend of the data. With a male of height $6'7"=6\times12+7=79$ in, we have $y = 3.0625\times79- 56.213\approx185.7$ lb.
