Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ty /2, (b) find the critical value z,/2, 0or (c) state that neither the...

please help solve attached

Extracted text: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ty /2, (b) find the critical value z,/2, 0or (c) state that neither the normal distribution nor the t distribution applies. Here are summary statistics for randomly selected weights of newborn girls: n = 220, x = 29.5 hg, s = 6.8 hg. The confidence level is 90%. 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.) В. Za12 %3D (Round to two decimal places as needed.) C. Neither the normal distribution nor the t distribution applies. Click to select and enter your answer(s). Save for Later