Which of the following is NOT true of the confidence level of a confidence interval? A. The confidence level is often expressed as the probability or area 1minus−alphaα, where alphaα is the complement of the confidence level. B. There is a 1minus−alphaα chance, where alphaα is the complement of the confidence level, that the true value of p will fall in the confidence interval produced from our sample. C. The confidence level is also called the degree of confidence. D. The confidence level gives us the success rate of the procedure used to construct the confidence interval.

## Answer

**There is a 1 – α chance, where α is the complement of the confidence level, that the true value of p will fall in the confidence interval produced from our sample.**

*The confidence level is the probability that the confidence
interval actually does contain the true value of p, not the other
way around. Saying that “there is a 1 – α
chance, where α is the complement of the
confidence level, that the true value of p will fall in the
confidence interval produced from our sample” is a common
misinterpretation of the confidence interval.*