Two parts are assembled as shown in the figure. The distributions of x1 and x2 are normal, with µ1 = 20, s1 = 0.3 and µ2 = 19.6, s2 = 0.4.
The specifications of the clearance between the mating parts are 0.5 ± 0.4. What fraction of assemblies will fail to meet specifications if assembly is at random?