Video: P AUB Formula yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
P ( AUB ) = P (ABc UA AcB U AB). P ( AUB ) = P (ABc) + P (AcB) + P (AB). P (A) + P (B) = P (ABc)+ P (Acb) + 2 x P (AB). Qhov no yuav yog P ( AUB ), tab sis rau qhov tseeb tias P (AB) suav ob zaug, tsis yog ib zaug.
Dhau li ntawm no, P AUB txhais li cas hauv kev txheeb cais?
P(A∩B) yog qhov tshwm sim uas cov xwm txheej A thiab B ob leeg tshwm sim. Yeej ∩ txhais tau tias 'thiab'. U yog lub union, yog li ntawd P (A U B ) txhais tau hais tias qhov tshwm sim A lossis B tshwm sim, lossis ob qho tib si; nws yog qhov tshwm sim uas tsawg kawg yog ib qho xwm txheej tshwm sim. P (AUB )=P(A)+P(B)-P(A∩B), yog kuv nco tau lawm.
Kuj Paub, P A union B txhais li cas? Qhov tshwm sim uas tshwm sim A lossis B tshwm sim yog qhov tshwm sim ntawm tus lub koomhaum ntawm A thiab B . Cov qhov tshwm sim ntawm tus lub koomhaum ntawm Events A thiab B yog denoted P (A ∪ B ) Yog tias qhov tshwm sim ntawm qhov xwm txheej A hloov pauv qhov tshwm sim ntawm Kev tshwm sim B , ces Txheej xwm A thiab B nyob ntawm.
Ib yam li ntawd ib tug yuav nug, yog dab tsi yog tus qauv ntawm qhov tshwm sim?
Probability formula yog qhov piv ntawm cov txiaj ntsig zoo rau tag nrho cov txiaj ntsig tau. Ntsuas qhov tshwm sim ntawm qhov tshwm sim raws li hauv qab no: - Yog tias P(A) > P(B) ces qhov xwm txheej A yuav tshwm sim ntau dua li qhov tshwm sim B. - Yog tias P(A) = P(B) ces xwm txheej A thiab B. muaj qhov sib npaug yuav tshwm sim.
Koj sawv rau dab tsi hauv qhov tshwm sim?
U (a, b) uniform distribution. sib npaug qhov tshwm sim nyob rau hauv lub a, b.
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