Need answer:, gasoline distributor wonders whether an individual’s income level influences the grade of gasoline purchased.,,,Personal, Type of Gasoline, ,Income, Regular, Premium, Extra Premium, ,Less than $30,000, 80, 30, 30, ,$30,000 or More, 70, 40, 50, ,,,Using ? = .05, observed chi-square value is ______________.,,, 4.44, ,, 32.89, ,, 51.79, ,, 5.79, ,, 15.79, ,
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