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Cara and Ester of Ghotta Goh! Cerveza Corp. conducted a survey on their 12-ounce cans to be sure that the variance of the amount of beer, in each can, was no more than 0.01 square ounces. They collected a random sample of twenty cans of their 12-ounce beer, pulled from their esto production line, and got a sample variance of 0.014 square ounces. Assume that the amount of beer in all 12-ounce cans to be normally 0 distributed. Help them: elmabute bags-up
a. Construct a 99% confidence interval for the population variance.
b. Construct a 90% confidence interval for the standard deviation.
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Mean annual water consumption per household in a certain city is 6,800 L. The variance is 1,440,000. A random sample of 40 households in one neighborhood.
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