ASQ
CSSBB · Question #21
CSSBB Question #21: Real Exam Question with Answer & Explanation
The correct answer is D. 6/ 15. See the full explanation below for the reasoning.
Question
A population of size 1,000,000 has mean 42 and standard deviation 6. Sixty random samples, each of size 15 are selected. According to the Central Limit Theorem the distribution of the sixty sample means has a standard deviation of approximately:
Options
- A6
- B6/42
- C6/15
- D6/ 15
- Enone of the above
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