A Sample of 21 Elements Is Selected to Estimate a 90

question 37

Multiple Choice

A sample of 21 elements is selected to estimate a 90% confidence interval for the variance of the population. The chi-square value(s) to be used for this interval estimation is(are)

• A) 31.410.
• B) 12.443.
• C) 10.851 and 31.410.
• D) 12.443 and 28.412.

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