We consider the Stochastic Boolean Function Evaluation (SBFE) problem for classes of DNF formulas. The SBFE problem for DNF formulas is a “sequential testing” problem where we need to determine the value of DNF formula on an initially unknown input x = (x1, ..., xn), when there is a cost ci associated with obtaining the value of xi, each xi is equal to 1 with known probability pi, and the xi ar...