題組內容
2.[20%] A manufacturer produces steel rods in three sizes (small, medium and large). For the steel rods sold
by this manufacturer, 50% are of small size, 40% are of mediu
ium size and 10% are of large size. Based on
the strength test results, 15% of the small steel rods do not meet the specification. The pe ercentages that do
not meet the specification are 10% and 5% for medium and large steel rods, respectively.
阿摩線上測驗
登入