The mean and the standard deviation of the sample of 100 bank customer waiting times are x = 5.14 and s = 2.321. (1) Calculate a t-based 95 percent confidence interval for , the mean of all possible bank customer waiting times using the new system. (Choose the nearest degree of freedom for the given sample size. Round your answers to 3 decimal places.) The t-based 95 percent confidence interval is (2) Are we 95 percent confident that / is less than 6 minutes?. interval is than 6