A Recent Survey of Gasoline Prices Indicated That the National $\$ 4.098$

question 83

Multiple Choice

A recent survey of gasoline prices indicated that the national average was $\$ 4.098$ per gallon. The Dallas Automobile Club claimed that gasoline in Texas was significantly lower than the national average. A survey covering 10 different suburbs in Dallas found the average price of gasoline to be $\$ 3.924$ per gallon with a population standard deviation of $\$ 0.053$ . What critical value should be used to test the claim using $\alpha = 0.01$ ?

• A) -2.33
• B) -1.26
• C) 1.26
• D) 2.33