Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value to2, (b) find the critical value Zo 2, or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n = 231, x = 30.9 hg, s = 7.8 hg. The confidence level is 99% bila Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. t 2 (Round to two decimal places as needed.) OB. Zal2 (Round to two decimal places as needed.) OC. Neither the normal distribution nor the t distribution applies