2. The Department of Trade and Industry reported that the mean retail price per gallon of a certain product was PhP 140.50. Suppose that the standard deviation was PhP 5.00 and the retail price per gallon has a bell- shaped distribution. a. What percentage of the product is sold between PhP 135.50 and PhP 145.50? b. What percentage of the product is sold between PhP 135.50 and PhP 150.50? c. What percentage of the product is sold for more than PhP 150.50 per gallon? Show the area under the curve. 2

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