1.2.7-1 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 applies. The confidence level is 95%, o= 3727 thousand dollars, and the histogram of 58 player salaries (in thousands of dollars) of a quency football players on a team is as shown. Select the correct choice below and, if necessary, fill in the answer box to complete your choice