C Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical 40- A1 value to / 2. (b) find the critical value za/2, or (c) state that 30- neither the normal distribution nor the t distribution applies. Frequency 20- The confidence level is 90%, o is not known, and the 10- VI histogram of 60 player salaries (in thousands of dollars) of football players on a team is as shown. 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.) O B. za/2= (Round to two decimal places as needed.) O C. Neither the normal distribution nor the t distribution applies Get More Help - Media Clear All Check