Problem

In fitting a least squares line to n = 10 data points, the following quantities were compu...

In fitting a least squares line to n = 10 data points, the following quantities were computed:

SSxx = 32, x = 3, SSyy = 26, y = 4, SSxy = 28

a. Find the least squares line.


b. Graph the least squares line.


c. Calculate SSE.


d. Calculate s2.


e. Find a 95% confidence interval for the mean value of y when xp = 2.5.


f. Find a 95% prediction interval for y when xp = 4.

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