Question #71011
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.
1
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2017-11-14T14:14:07-0500
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