Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta /2. (b) find the critical value Z,/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 = 295, x = 32.3 hg, s=6.9 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 ta/2= (Round to two decimal places as needed.) O B. Za/2= (Round to two decimal places as needed ) O C. Neither the normal distribution nor the t distribution applies