According to the Central Limit Theorem Select one: a. the binomial distribution can always be approximated as normal. b. if the parent population is normal, the sampling distribution of the mean will be normal. c. if the parent population is NOT normal (or unknown), and the sample size is equal to or larger than 30, the sampling distribution of the mean will be normal. d. virtually 100% of the data will fall within three standard deviations of the mean.