Transcript text: Which of the following calculations is NOT derived from the confidence interval?
Choose the correct answer below.
A. Difference between the limits, $2 E=$ (upper confidence limit) - (lower confidence limit)
B. The population mean, $\mu=$ (upper confidence limit) + (lower confidence limit)
C. The point estimate of $\mu, \bar{x}=\frac{\text { (upper confidence limit) }+ \text { (lower confidence limit) }}{2}$
D. The margin of error, $E=\frac{\text { (upper confidence limit) }- \text { (lower confidence limit) }}{2}$