Sample Means and Ranges Were Obtained for Five Samples of 10

question 11

Multiple Choice

Sample means and ranges were obtained for five samples of 10 units per sample from a production process.Assume the process was considered to be in control during the period these samples were collected.The results are as follows: LCL for the three sigma X chart for the process is approximately (for a sample size of 10,A2 = 0.31) :

• A)10.12.
• B)10.05.
• C)10.94.
• D)9.44.
• E)9.75.

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Definitions:

Crustal Thickness

The measure of the thickness of Earth's crust, which varies between the oceanic and continental crust.

Volcanism

the process through which magma and volcanic gases are expelled onto the Earth's surface, forming volcanic features.

Foreland Basin

A basin that forms when crust (either continental or oceanic) is warped by the weight of thrust sheets, especially when formed between a mountain belt and continental interior.

Passive Margin

A tectonically inactive edge of a continent, characterized by a transition from continental to oceanic lithosphere without significant seismic activity.