A control chart is developed to monitor the analysis of iron levels in human blood. The lines on the control chart were obtained from a control sample with a population mean, , of 51.50 mg/dL and a population standard deviation, , of 3.50 mg/dL.

To monitor the analysis of the iron levels, the laboratory measured 30 replicate control samples every day. Lists of the mean values of the 30 replicate control samples measured every day over a series of 14 consecutive days (runs) are given.

Classify the lists of mean values based on whether they indicate the process should be shut down for troubleshooting or not. All values in the lists have units of mg/dL.

Control Chart (values in mg/dL) Action line 53.42 - 51.50 Warning line Action line 49.58 Run number Shut down for troubleshooting Do not shut down for troubleshooting Answer Bank 50.39, 51.26, 51.03, 51.75, 51.60, 52.30, 51.41, 51.63, 50.76, 50.98, 50.35, 51.83, 51.12, 52.71 51.10, 50.25, 52.75, 53.12, 51.27, 51.58, 52.16, 52.70, 51.46, 52.08, 52.00, 51.48, 51.86, 51.81 51.47, 51.36, 51.67, 51.08, 50.99, 51.55, 51.06, 51.57, 50.73, 51.31, 50.23, 51.05, 50.71, 52.8:5 52.41, 52.22, 51.38, 52.71, 52.42, 52.09, 51.77, 51.49, 51.19, 51.88, 51.12, 50.91, 51.62, 52.58 51.43, 51.32, 52.86, 51.37, 53.31, 51.61, 50.97, 51.53, 50.41,51.22, 50.25, 51.08, 50.69, 52.15