Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value 1/2- (b) find the critical value 2/2- or (c) state that neither the normal distribution nor the t distribution applies. The confidence level is 99%, a is not known, and the histogram of 58 player salaries (in thousands of dollars) of football players on a team is as shown Frequency 40- 30- 20 10 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA (Round to two decimal places as needed.) (Round to two decimal places as needed.) OC. Neither the normal distribution nor the t distribution applies 4000 8000 12000 16000 20000 Salary (thousands of dollars)