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Construct a confidence interval for the standard deviation

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Reference no: EM131847114

In 12 test runs an experimental engine consumed on the average 12.9 gallons of gasoline per minute with a standard deviation of 1.6 gallons.

a) Construct a 90% confidence interval for the average gasoline consumption of the engine.

b) Construct a 95% confidence interval for the standard deviation.

Reference no: EM131847114

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