数学问题概率求解释
Reworkproblem28fromsection3.4ofyourtext,involvingthedrawingoftwo
ballsfromaboxofcoloredballs.Assumetheboxcontains8balls:
3red,3blue,and2yellow.Aballisdrawnandits
colornoted.Iftheballisyellow,itisreplaced;otherwise,itisnot.
Asecondballisthendrawnanditscolorisnoted.
Whatistheprobabilitythatthefirstballwasyellow,giventhatthe
secondwasred?
KEYIS7/27
Anyoneknowthedetailedprocess?
Thax!
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