Suppose (30, 54) is a 99% confidence interval estimate for a population mean u. a) The point estimate 5: = D b) The margin of error = C] c) Which of the following are true statements? I. There is a 0.99 probability that u is between 30 and 54. ll. There's a 99% chance that any particular value in the population will fall between 30 and 54. III. 99% of confidence intervals constructed in this population will have a lower limit of 30 and an upper limit of 54. IV. If 99% confidence intervals are calculated from all possible samples of the given size, [A is expected to be in 99% of these intervals. 0 IV only OI and IV 0 \"I only OI and II OH and III OI and III A study is conducted to estimate the mean completion time of a task to within 4 minutes 24 seconds of the population mean. Suppose completion time is normally distributed with a standard deviation of 9 minutes 54 seconds. What minimum sample size is required at the 98.4% confidence level? You must use a critical 2 value rounded to two (2) decimal places. Do not round other intermediate results. Report final answer as an integer. Minimum sample size required = [:] Question Help: El Video