Answer Happy

8. What assumption is necessary for the confidence interval
analysis to work properly?
A) The population that we are sampling from needs to be
approximately normally distributed.
B) The Central Limit theorem guarantees that no assumptions
about the population are
necessary.
C) The sampling distribution of the sample mean needs to be
approximately normally
distributed.
D) The population that we are sampling from needs to be a t
-distribution with n-1 degrees of freedom.