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
Suppose that there is a 6-sided die that is weighted in such a way that each time the die is rolled, the probabilities of rollin
Suppose that there is a 6-sided die that is weighted in such a way that each time the die is rolled, the probabilities of rollin
admin
2018-12-14
48
问题
Suppose that there is a 6-sided die that is weighted in such a way that each time the die is rolled, the probabilities of rolling any of the numbers from 1 to 5 are all equal, but the probability of rolling a 6 is twice the probability of rolling a 1. When you roll the die once, the 6 outcomes are not equally likely. What are the probabilities of the 6 outcomes?
选项
答案
2/7
解析
Using the notation P(l)for the probability of rolling a 1, let p = P(l). Then each of the probabilities of rolling a 2, 3, 4, or 5 is equal to p, and the probability of rolling a 6 is 2p. Therefore, since the sum of the probabilities of all possible outcomes is 1, it follows that
1 = P(l)+ P(2)+ P(3)+ P(4)+ P(5)+ P(6)=p +p +p+p+p + 2p
= 7p
So the probability of rolling each of the numbers from 1 to 5 is p =1/7, and the probability of rolling a 6 is 2/7.
转载请注明原文地址:https://kaotiyun.com/show/n0kO777K
本试题收录于:
GRE QUANTITATIVE题库GRE分类
0
GRE QUANTITATIVE
GRE
相关试题推荐
Wouldyoumind______thecomputergameinyourroom?
Expertssuggestusingadifferentpasswordforeverywebsiteyouvisit,andchangingthepasswordeveryfewmonths.Ittakestro
Lifeasawomaninthecolonial(殖民的)Americaseemsquitedifferentfromitistoday.Womenwereconsideredinferiortomen,afac
Visitorstothezoousuallypitytheanimalsowingtotheirparticularemotionalassociations(联想).Whichanimalsshouldbeindee
AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair
Allthefollowingcasesareon-the-jobsmokingexceptthat______.Accordingtothepassage,on-the-jobsmokingaffectsanemplo
Manyadelegatewasinfavorofhisproposalthataspecialcommittee______toinvestigatetheincident.
TheCalifornialawmakersvotedThursdaytoraisethelegalagetobuytobaccoproductsfrom18to21.Themeasureispartofal
Itwasthewealthofthe______pioneerlandownerJohnHarvardthatmadeHarvardUniversitypossible.
Whatistheequationofalineparalleltoy=4x-12thatcrossesthey-axisat3?
随机试题
在平板对接中,因材料厚度不一致而采取削薄处理的目的是保证工件的外观质量。
大面积烧伤儿童,口渴、尿少,尿比重1.030,脉搏140次/分,神志淡漠,肢体冷,首要的处理应是:()
男性,48岁,有间歇性头痛、头晕、血压偏高病史,昨日出现剧烈头痛、心悸、多汗、呕吐、视物模糊、抽搐、面色苍白,血压220/122mmHg,心率120次/分。合理诊断是
任何离子的平衡电位
穿好手术衣后,手应该放置的正确位置是
男,52岁,因患十二指肠球部溃疡合并幽门不全梗阻入院施行胃大部切除术。术中出血约600ml。心率92/min,呼吸21/min,血压98/60mmHg(13.1/8.0kPa),血红蛋白105g/L。在输血问题上,恰当做法是
刺激迷走神经可使()。
某运输公司于2009年开展快速货运业务,获利1500万元。此后又扩大生产,需购进新车。请参考表所列资料,计算回答表后的问题。根据给出的资料,进行车辆评价时应选用()方法。
消费者协会的职能包括()。
Whenadiseaseofepidemicproportionsthreatensthepublic,scientistsimmediatelygettowork,tryingtolocatethesourceof
最新回复
(
0
)