please use proper sig figs and use propagation of error !!

1. Pierre, Raphael, Rebecca, and Clive are each trying to make a solution that requires 40 mL of stock to be added. Pierre uses a 25mL, a 10mL and a 5mL pipette; Raphael uses a 5mL pipette 8 times; Rebecca uses a 50mL burette (hint: You have two measurements with a burette); and Clive uses a 25mL graduated cylinder. Assuming the only error introduced was by the variance in the glassware, determine the cumulative error for each person. Please show all calculations and use the propagation of error equations from the manual