Today, the student chefs are preparing the "Tortilla de Merced", a traditional Spanish egg dish with an infusion of spicy hot potato chips whose mascot is a cheetah. Let us model the radius (in inches) of the dish with R U(3, 5). Use Chebyshev's Inequality to compute how many dishes need to be measured so that their average radius is within 2 percent error with at least 90 percent probability.