The following sample observations were randomly selected a D

The following sample observations were randomly selected.

a. Determine the regression equation.
b. Determine the value of when X is 7.

Using technology, we get

slope =    -1.74251497
intercept =    19.11976048

[If you use Excel, you can use the SLOPE and INTERCEPT functions to calculate these.]

Thus, the regression equation is

y^ = -1.74251497x + 19.11976048 [answer, a]

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Thus, if x =    7

Then

y^ =    -1.74251497(7) + 19.11976048 = 6.922155689   [answer, b]