Q # 49

Imagine that the regression equation for the above data were Y' = 78 + .50X (which it is not), and that the standard error of estimate is 5 (which it also is not). What is an approximate 95% confidence interval for the actual Y value within this sample, when X=20? (Hint: When looking up t-critical values in your t-table, assume a two-tailed test).

• A.

[83,92]

• B.

[78,98]

• C.

[64,84]

• D.

[77,97]