Assume that we want to construct a confidence interval. Do

Last updated: 7/9/2022

Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value to/2, (b) find the critical value Za/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 = 233, x= 30.8 hg, s= 6.3 hg. The confidence level is 95%. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. ta/2= (Round to two decimal places as needed.) B. Za/2 = (Round to two decimal places as needed.) C. Neither the normal distribution nor the t distribution applies.