A Sample of 23 European Countries Found That the Variance $27.2 < \sigma ^ { 2 } < 118.3$

question 65

Multiple Choice

A sample of 23 European countries found that the variance on life expectancy was 7.3 years. What is the 95% confidence interval for the variance of life expectancy in Europe?

• A) \(27.2 < \sigma ^ { 2 } < 118.3\)
• B) \(56 < \sigma ^ { 2 } < 10.3\)
• C) \(4.4 < \sigma ^ { 2 } < 14.6\)
• D) \(289 < \sigma ^ { 2 } < 1150\)

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Definitions:

Elasticity Of Demand

A measure of how much the quantity demanded of a good responds to a change in price, indicating the sensitivity of consumers to price changes.

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The difference between the cost of a good or service and its selling price, expressed as a percentage over the cost.

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