For a Given Confidence Level and Sample Size, Which of the Following

question 10

Multiple Choice

For a given confidence level and sample size, which of the following is true in the interval estimation of the population mean when σ is known?

• A) If the sample standard deviation is smaller, the interval is wider.
• B) If the population standard deviation is greater, the interval is wider.
• C) If the population standard deviation is smaller, the interval is wider.
• D) If the population standard deviation is greater, the interval is narrower.

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