Question: For the following statistic:

\[n=11\quad \sum{x=106.3\quad \sum{{{x}^{2}}=1040.95\quad \sum{y=728.70\quad \sum{xy=7009.91\quad \sum{{{y}^{2}}=48390.79}}}}}\]

x = tread mill run time; y = 20km ski time.

a.) Determine the regression line equation.

b.) What would you predict ski time to be for a treadmill time is 10 minutes?

c.) Calculate the prediction interval for (b).

d) Perform the test for the regression slope?