A Random Sample of 20 Observations Is Selected from a Normally

question 47

Multiple Choice

A random sample of 20 observations is selected from a normally distributed population.The sample variance is 12.In the 95% confidence interval for the population standard deviation, the upper limit will be:

• A) 2.634.
• B) 2.750.
• C) 4.747.
• D) 5.060.

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