Which of the Following Statements Are True?
A) Generally Speaking $\alpha , \text { and } \beta$

question 44

Multiple Choice

Which of the following statements are true?

• A) Generally speaking, a control chart will be effective if it gives very few out-of-control signals when the process is I control, but shows a point outside the control limits almost as soon as the process goes out of control.
• B) One assessment of a control chart's effectiveness is based on the notion of "error probabilities" \(\alpha , \text { and } \beta\)
• C) The use of a 3-sigma limits for an \(\bar { X }\)
• Chart makes it highly unlikely that an out-of-control signal will result from an in-control process.
• D) One assessment of a control chart's effectiveness involves the average run length (ARL) needed to observe an out-of-control signal.
• E) All of the above statements are true.

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