Find the critical value to 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 (a) For level 98% and sample size 8 Critical value = X 5 Part 2 of 4 (b) For level 99% and sample size 13 Critical value = X 5(c) For level 99.5% and 53an: size 23 [d] For level 95% and sample size ll]