Which of the Following Statements Are True

Multiple Choice

Which of the following statements are true?

A) A confidence interval is always calculated by first selecting a confidence level, which is a measure of the degree of reliability of the interval.
B) A confidence level of 95% implies that 95% of all samples would give an interval that includes the parameter being estimated, and only 5% of all samples would yield an erroneous interval.
C) Information about the precision of an interval estimate is conveyed by the width of the interval.
D) The higher the confidence level, the more strongly we believe that the value of the parameter being estimated lies within the interval.
E) All of the above statements are true.