首页
登录
职称英语
[img]2014m9x/ct_egreqm_egreqbj_0056_20148[/img] [br] CIn this question, you are
[img]2014m9x/ct_egreqm_egreqbj_0056_20148[/img] [br] CIn this question, you are
游客
2025-02-24
31
管理
问题
[br]
选项
答案
C
解析
In this question, you are given that the number of defective parts in each of 50 boxes was recorded and that the average of the 50 recorded numbers was 1.12. You are also given that an error was made in recording one of the 50 numbers— the number 10 was recorded instead of the number 1—so the actual number of defective parts in this box is 9 less than the recorded number. Then you are asked to compare the actual average number of defective parts per box with 0.94.
To determine the actual average number of defective parts per box, first note that the sum of the 50 recorded numbers equals the average of the 50 recorded numbers times 50—that is,(1.12)(50), or 56.
Now you know that for 49 of the 50 boxes, the actual number of defective parts is equal to the recorded number; and for one box, the actual number is 9 less than the recorded number. From this you can conclude that the sum of the 50 actual numbers is equal to the sum of the 50 recorded numbers minus 9. So the sum of the actual numbers of defective parts is 56 - 9, or 47.
Therefore, the actual average number ol defective parts per box is 47/50, or 0.94. Quantity A is equal to Quantity B, and the correct answer is Choice C.
转载请注明原文地址:https://tihaiku.com/zcyy/3970283.html
相关试题推荐
Theoperation[img]2014m9x/ct_egreqm_egreqjs_0079_20148[/img]isdefinedforalli
Jacob’sweeklytake-homepayisndollars.Eachweekheuses[img]2014m9x/ct_egre
If[img]2014m9x/ct_egreqm_egreqjs_0069_20148[/img],whichofthefollowingcould
[img]2014m9x/ct_egreqm_egreqbj_0083_20148[/img][br]BInthisquestion,youare
[img]2014m9x/ct_egreqm_egreqbj_0083_20148[/img][br]CInthisquestion,youare
[img]2014m9x/ct_egreqm_egreqbj_0083_20148[/img][br]CInthisquestion,youare
[img]2014m9x/ct_egreqm_egreqbj_0083_20148[/img][br]DInthisquestion,youare
[img]2014m9x/ct_egreqm_egreqbj_0056_20148[/img][br]CInthisquestion,youare
[img]2014m9x/ct_egreqm_egreqbj_0056_20148[/img][br]AInthisquestion,youare
[img]2014m9x/ct_egreqm_egreqbj_0056_20148[/img][br]BInthisquestion,youare
随机试题
Whensomebodycalls,firstofall,the【B1】______wouldofferhimacigarette
[originaltext]M:Feellikegoingoutforawalk?W:Notrightnow—I’mataver
[originaltext]Ireallyenjoyclassicmusic.Howaboutyou?[/originaltext]A、Yes,
三弦属于下列民族管弦乐队中()的一员。A.拉弦乐器组 B.弹拨乐器组 C.
女性,55岁,消瘦半年,高热10天。体检:颈部淋巴结明显肿大,肝肿、脾大,CT还
三角形的内角和为180度,问六边形的内角和是多少度: A540 B360
关于器官移植的叙述,下列哪项不正确? A.目前最大障碍是供体短缺B.尸
(2015年真题)根据《期货交易管理条例》,依法对我国商品和金融期货市场实行监督
系统脱敏法的基本步骤是( )A.测量焦虑水平 B.学习放松技巧 C.建构焦
骨巨细胞瘤治疗方案的确定,决定于A、X线表现 B、临床表现 C、G,T,M分
最新回复
(
0
)