2.[20%] A manufacturer produces steel rods in three sizes (small, medium and large). For the steel rods soldby this manufacturer, 50% are of small size, 40% are of mediuium size and 10% are of large size. Based onthe strength test results, 15% of the small steel rods do not meet the specification. The pe ercentages that donot meet the specification are 10% and 5% for medium and large steel rods, respectively.
【題組】(i)(10%) Determine the probability that a rod randomly chosen from this manufacturer will not meet thespecification.