shipment | number of defective chips in the shipment | total number of chips in the shipment |
S1 | 2 | 5000 |
S2 | 5 | 12000 |
S3 | 6 | 18000 |
S4 | 4 | 16000 |
A computer chip manufacturer expects the ratio of the number of defective chips to the total number of chips in all furture shipments to equal the correspanding ratio for shipments S1,S2,S3,and S4 combined, as shoown in ther table above. What is the expected number of defective chips in a shipment of 60,000chips?
A.14 B,20 C,22 D,24 E,25
我对题目的理解有问题,说白了就是看不懂。就更不要说计算了。 请帮白痴解答一下,谢谢 呵呵
有一个芯片生产商生产芯片,那么自然有废品了,他希望将来发货时有缺陷的芯片占的比例是S1,S2,S3,S4合在一起的比例,图中给出的生产商发了四批货,就是每一次发货总数和缺陷数,现在这个生产商又发货了,发货数是60000,问希望的缺陷数是多少。
2+5+6+4/5000+12000+18000+16000 这是希望的比例数,再乘以60000即可。
刚开始看阅读的时候我很困难,得到了很多大家的指点和帮助,你去看一下杨鹏难句吧,看的时候我感觉很痛苦,边看边做OG的阅读,看完了就好多了.
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