In a certain barangay, the monthly food expenditures of families average P4,500 with a standard deviation of P750. What is the area of these expenditures that are between P3,900 and P5,850? z1 = P (Z < - z1) = P (Z < - z2) = Total area = .00 .01 .02 .03 .04 .05 .0003 -3.4 -3.3 .0003 .0005 .0003 .0005 .0003 .0003 .0003 .0005 .0004 .0004 .0004

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