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FOR MORE CLASSES VISIT www.qnt561genius.com 1. The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the gasoline mileage is approximately normally distributed with a standard deviation of 3.2 miles per gallon. 2. What conditions must n satisfy to make the x2 test valid? 3. To use the t-statistic to test for a difference between the means of two populations, what assumptions must be made about the two populations? About the two samples? 4. Studies of managers from two countries in the 1970s found sharp differences

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