A Random Sample of 100 Rods from a Process with a Mean

question 65

Multiple Choice

A random sample of 100 rods from a process with a mean of 20 feet produced a sample mean of 20.01 feet and a standard deviation of 0.015.This difference between the process mean and the sample mean is likely to be:

• A) assignable variation.
• B) special-cause variation.
• C) random variation.
• D) homoscedasticity.
• E) costs of attrition.

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