Which of the following is the correct expression for computing a 100(1 - α)% confidence interval of the expected value of y?

Question

Quizplus · Accepted Answer

The correct expression for computing a 100(1 - α)% confidence interval of the expected value of y is:
ŷ ± tα/2,df * SE(ŷ)
where ŷ is the predicted value of y, tα/2,df is the t-value for the desired level of confidence and degrees of freedom, and SE(ŷ) is the standard error of the predicted value. The expression in choice C includes all of these components.

Which of the Following Is the Correct Expression for Computing