Which of the Following Statements Are True?
A) the Confidence $x = x ^ { + }$

Multiple Choice

Which of the following statements are true?

A) The confidence interval for
; the expected value of Y when $x = x ^ { + }$
Is centered at the point estimate for
And extends out to each side by an amount that depends on the confidence level and on the extent of variability in the estimator on which the point estimated is based.
B) In some situations, a confidence interval is desired not just for a single x value but for two or more x values.
C) The joint or simultaneous confidence level for a set of K Bonferroni intervals is guaranteed to be at least 100(1 - K $\alpha$
) %)
D) We refer to an interval of plausible values for a future Y as a prediction interval rather than a confidence interval, since a future value of Y is a random variable.
E) All of the above statements are true.