The checking-in time at a readymade garments organization is to be investigated. The means of 15 samples of 10 observations with the ranges for each of the samples are given in minute in the table...

Extracted text: The checking-in time at a readymade garments organization is to be investigated. The means of 15 samples of 10 observations with the ranges for each of the samples are given in minute in the table below: Sample Мean Range Sampl Мean Range Sample Мean Range e 3.88 3.86 1 3.86 3.98 0.05 0.03 11 3.85 0.05 2 0.06 7 0.05 12 3.89 0.09 3 3.78 0.03 8 3.85 0.08 13 3.84 0.08 4 3.94 0.07 3.95 0.06 14 3.86 0.10 5 3.84 0.08 10 3.80 0.09 15 3.97 0.07 Construct the mean control chart for this process of checking-in with three-sigma (z = 3) limits. Plot the sample means into the control chart. Is the process in control? Analyze the data using the median run-test and the up/down run-test and provide your conclusion. ii. Need proper math with workings