Assume that we want to construct a confidence interval. Do one of the following, as appropriate. (a) find the critical value to,, (b) find the critical value z , 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 = 196, x = 28.6 hg. s = 7.1 hg. The confidence level is 99% Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. to 127 (Round to two decimal places as needed.) O B. Za127 (Round to two decimal places as needed.) C. Neither the normal distribution nor the t distribution applies