A group of 20 values has a mean of 85 and a median of 80. A different group of 3

游客2025-02-24 44

问题 A group of 20 values has a mean of 85 and a median of 80. A different group of 30 values has a mean of 75 and a median of 72.
(a)What is the mean of the 50 values?
(b)What is the median of the 50 values? [br]

选项

答案 The median cannot be determined from the information given.

解析

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A group of 20 values has a mean of 85 and a median of 80. A different group of 3

Forwhichvaluesofxis2x-5<-3x+20?5>xThefirststepinsolvingthispr

Forwhichvaluesofxis6x-3>4x+5?x>4Solvethisproblemalgebraically,a

Ofthefollowingvalues,whichisthegreatest?[img]2014m5x/ct_egreqm_egreqjs_0

Whichofthefollowingcouldbethegrap>hofallvaluesofxthatsatisfythei

b-3,b-1,b+2,b+3,b+4Themedianofthefivetermslistedaboveis5,wh

Twodifferentpositiveintegersxandyareselectedfromtheoddintegersthat

Marthainvited4friendstogowithhertothemovies.Thereare120differentw

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Inthefigurebelow,AC=BC.Findthevaluesofxandy.[img]2015m7x/ct_egreq

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(幸好我带了足够的钱)__________:itismoreexpensivethanIexpected.It’sjustaswell

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WilliamSidneyPorter,knownasO.Henry,ismostfamousfor______.A、hispoems

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