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 Zo / 2, or (c) state that neither the normal distribution nor the t distribution applies. 40- The confidence level is 99%, o is not known, and the histogram of 54 player salaries (in thousands of dollars) of football players on a team is as shown. 30- Frequency 20- 10- -0 4000 8000 12000 16000 20000 Salary (thousands of dollars) 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.) OB. Za/2= (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies