Quality control is more personal when the products are hand grenades and it’s your turn to learn how to throw one. You understand that once you pull the pin, if you hold on too long you might be severely injured or killed. However, if the fuse burns for too long after you have thrown it, the enemy might have time to pick it up and throw it back at you with results similar to holding it too long. Suppose the fuse burn time is designed to be 4.00 s with a standard deviation of 0.2 s, and the grenade has been made to Six Sigma standards. What is the variability you can expect on the time for it to detonate after pulling its safety pin?