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Business, 25.10.2019 01:43 hellodarkness14

The energy information administration reported that the mean retail price per gallon of regu lar grade gasoline was $3.43 (energy information administration, july 2012). suppose that the standard deviation was $.10 and that the retail price per gallon has a bellshaped distribution. a. what percentage of regular grade gasoline sold between $3.33 and $3.53 per gallon? b. what percentage of regular grade gasoline sold between $3.33 and $3.63 per gallon? c. what percentage of regular grade gasoline sold for more than $3.63 per gallon?

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