PayTime95% Confidence Level Calculations22Std Dev = 4.219Mean = 18.107716Sample Size = 6518Confidence Level = 95%13Standard Error of Mean = 0.49133015916Z Value = 1.96Z value for 95% confidence level29Standard Error = 0.52094588517Interval Half Width = 1.02105393515Interval Lower Limit = 17.086623Interval Upper Limit = 19.1287182199% Confidence Level Calculations16Std Dev = 4.210Mean = 18.107716Sample Size = 6522Confidence Level = 99%17Standard Error of Mean = 0.49133015925Z Value = 2.576Z value for 95% confidence level15Standard Error = 0.52094588521Interval Half Width = 1.341956620Interval Lower Limit = 16.7657