You Randomly Draw a Sample of N = 25 from a Population

Multiple Choice

You randomly draw a sample of n = 25 from a population where  = 3. Which is the appropriate formula for the bounds of a 95% confidence interval?

A) $\bar{x} \pm 1.960 * 0.6$
B) $\bar{x} \pm 1.645 * 0.6$
C) $\bar{x} \pm 1.960 * 0.12$
D) $\bar{x} \pm 1.645 * 0.12$