A Sample of 21 Elements Is Selected to Estimate a 90

question 45

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)-1.96 and 1.96
• B)12.443
• C)10.851 and 31.410
• D)12.443 and 28.412

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Definitions:

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values around the mean.

Budget Line

A visual depiction of every potential mix of two items that can be bought at specific prices and under a set budget.

Expected Rate

The predicted average rate of return or growth, based on historical data or statistical analysis, applicable to investments or economic variables.

Risk-Free Asset

is an investment that is expected to deliver a guaranteed return with no risk of financial loss.