We want to construct a confidence interval. The confidence level is 90%, o= 3848 thousand dollars, and the histogram of 57 player salaries (in thousand of dollars) of football players on a team is as shown. Find z a/2 = ___ Round to two decimal places as needed

40 30 Frequency 20 10- 4000 8000 12000 16000 20000 Salary (thousands of dollars]