Figure 9
The x-axis is labeled Total Service Time and ranges from 0 to 20. The y-axis is labeled Percent and ranges from 0.1 to 99.9. The curve shows the distribution of service times, with data points plotted along the curve. The mean value is 8.035, and the standard deviation is 3.144. The sample size is 200, and the Anderson-Darling statistic is 2.346. The p-value is less than 0.005, indicating that the population is not normal. The confidence interval lines are shown around the curve. All values are approximated.Probability plot of total Service time after improvement. Source: Authors' own creation