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

Extracted text: Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value t,/2. (b) find the critical value z/ 2, or (c) state that neither the normal distribution nor the t distribution applies. 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.