首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A list of numbers has a mean of 8 and a standard deviation of 2.If x is a number in the list that is 2 standard deviations above
A list of numbers has a mean of 8 and a standard deviation of 2.If x is a number in the list that is 2 standard deviations above
admin
2014-08-12
55
问题
A list of numbers has a mean of 8 and a standard deviation of 2.If x is a number in the list that is 2 standard deviations above the mean, what is the value of x ? x=______
选项
答案
13
解析
You are given that x is 2 standard deviations above the mean, 8. Because the standard deviation of the numbers in the list is 2.5, it follows that x is(2)(2.5), or 5 units above the mean 8. Therefore, x = 8 + 5 = 13, and the correct answer is 13.
转载请注明原文地址:https://kaotiyun.com/show/a8kO777K
本试题收录于:
GRE QUANTITATIVE题库GRE分类
0
GRE QUANTITATIVE
GRE
相关试题推荐
Whenwemeetaperson,ourfirstimpressionisbasedontheirbodylanguageandtheirspeech.Whensomeonegoesuponastage,o
Hewas______enoughtounderstandmyquestionsfromthegesturesImade.
Withoilpriceskeeping______,peoplearehesitatingwhethertobuyacarornot.
AstronomersbelievethattheexpandinguniversistheresultofanenormousandpowerfulexplosioncatledtheBigBang.TheBig
DanteGabrielRossetti,thefamous19th-centurypoetandartist,wasonceapproachedbyanelderlyman.Theoldfellowhadsome
Therearemanyolderpeopleintheworldandtherewillbemanymore.Alittle-knownfactisthatover60percentoftheolderp
Theicewasnot______tobeartheweightofthemen.
You’dsoundalotmorepoliteifyoumakearequest______aquestion.
NocountryintheworldhasmoredailynewspapersthantheUSA.Therearealmost2,000ofthem,ascomparedwith180inJapan,
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustincludethebasicnecessitiesoflifesuchasfood,clo
随机试题
以解决某一问题而设计的指令序列称为程序。()
生态系统的生产包括初级生产和次级生产,其中消费者的生产属于______生产。
下列选项中,符合Graves病眼征分级标准4级的是
地西泮化学结构中的母核为
患儿,9岁。1个月前患肺炎喘嗽,迁延未愈,证见低热盗汗,千咳无痰,面色潮红,五心烦热,舌红少津,少苔,脉细数。治疗首选方()
依据《企业会计准则——收入》准则,收入实现的确认条件是()。
如果某器件的内径随着电镀时间的增加而变小,那么电镀时间和内径的相关系数r一定()。
在甲、乙等6个单位参加的一次“唱读讲传”演出活动中,每个单位的节目集中安排在一起,若采用抽签的方式随机确定各单位的演出顺序(序号为1,2,…,6),求:甲、乙两单位之间的演出单位个数ξ的分布列与期望.
影响态度与品德形成的内部条件是()。
香港电影史上的第一部电影是.1913年的()。
最新回复
(
0
)