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April 27, 2015

Homework Help: statistics

Posted by jen on Tuesday, December 6, 2011 at 3:02pm.

according to the energy information administration (officially energy statics from the US Government) the mean price for one gallon of unleaded regular gas in the US cities for the year 2007 was 2.80 A random sample of 30 pumps in georgia yielded and average price of 284 per gallon for unleaded gasoline. assume that .90 is the standard deviation. test whether the population mean price for unleaded gas is higher in georgia than that of general population using significance level alpha=.01

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