A data set has n = 30, P30 i=1 xi = 67, P30 i=1 yi = 1322, P30 i=1 x2 i = 582, P30 i=1 y2 i = 60600, P30 i=1 xiyi = 3840. Calculate ˆ 0, ˆ 1 and ˆ2.

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters