Suppose (16, 46) is a 99% confidence interval estimate for a population mean .. a) The point estimate x = b) The margin of error = c) Which of the following are true statements? I. There is a 0.99 probability that is between 16 and 46. II. There's a 99% chance that any particular value in the population will fall between 16 and 46. III. 99% of confidence intervals constructed in this population will have a lower limit of 16 and an upper limit of 46. IV. If 99% confidence intervals are calculated from all possible samples of the given size, is expected to be in 99% of these intervals. Select the correct answer:

• I and IV
• II and III
• I and III
• I and II
• IV only
• III only