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

Extracted text: Question Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value ta/2. (b) find the critical value za/2, or (c) state that neither the normal distribution nor the t distribution 40 applies. 30 The confidence level is 90%, o is not known, and the histogram of 57 player salaries (in thousands of dollars) of football players on a team is as shown. 20- 10- 4000 8000 12000 16000 20 Salary (theusands of dellars) Select the corect choice below and, if necessary, fill in the answer box to complete your choice. OA la12= (Round to two decimal places as needed.) OB. Za/2 (Round to two decimal places as needed.) OC Neither the nomal distribution nor thet distribution applies. Click to select and enter your answerts) 9MB # 2$ & 3 5 6 8. 9-