A thermal power plant has an agreement with three mines M1, M2 and M3 to receive 'Grade 1' coal, in the proportion of 60%, 25% and 15%, respectively. The probab...

In a quality control process of coal supplied to a thermal plant, the 3-sigma control limits for fixed carbon (FC) are defined by 40%±15%. The process is...

A deposit has the grade attribute X∈ with a density function f(x). For a cut-off grade xc, the proportion of the ore in the deposit is given by