AN Oral bioavailability. K Bones of the skull |. Find the critical value / /, needed to construct a confidence interval of the given level with the given sample size. Round the answers to three decimal places. Part 1 of 4 GR a) For level 98% and sample size 9 Critical value X Part 2 of 4 (b) For level 99.5% and sample size 13 Critical value Part 3 of 4 (c) For level 99% and sample size 27 Critical value Part 4 of 4 (d) For level 90% and sample size 11 Critical value