() At least two of three consecutive points lie more than two standard deviations from the mean. In Exercises 21-24, a control chart is shown. Each chart has horizontal lines drüwn at the mean u, at u...

Each chart has horizontal lines drawn at the m, at m+2o and at m+3o determine whether the process shown is in control or out of control. Explain. A gear has been designed to face a diameter of 3 inches the standard deviation of the process is .2 inch.

Extracted text: () At least two of three consecutive points lie more than two standard deviations from the mean. In Exercises 21-24, a control chart is shown. Each chart has horizontal lines drüwn at the mean u, at u ± 20, and at u t 30. Determine whether the process shown is in control or out of control. Explain. 21. A gear has been designed to 22. A nail has been designed to have a length of 4 inches. The standard deviation of the process have a diameter of 3 inches. The standard deviation of the process is 0.2 inch. is 0.12 inch. Gears Nails 4.50 4.25 4.00 3.75 4 6 8 10 12 1 2 3 4 5 6 7 8 9 10 Observation number Observation number 23. A liquid-dispensing machine has been designed to fill bottles with liter of liguid. The standard 24. An engine part has been designed to have a diameter of 55 millimeters. The standard is tion of the process Diameter (in inches) 2. 3. 4- Length (in inches)