Which of the following statements are true? I. The sampling distribution of æ has standard deviation even if the population is not normally distributed. II. The sampling distribution of a is normal if...

Extracted text: Which of the following statements are true? I. The sampling distribution of æ has standard deviation even if the population is not normally distributed. II. The sampling distribution of a is normal if the population has a normal distribution. III. When n is large, the sampling distribution of a is approximately normal even if the the population is not normally distributed. OI and II I and III Il and III I, II, and III None of the above gives the complete set of true responses.