Category: Probability and Statistics

Question Number 145583 by ArielVyny last updated on 06/Jul/21 $${une}\:{urne}\:{contient}\:{N}\:{boules}\:{dont} \\ $$$${M}\:{boules}\:{blanches}\:{et}\:{N}−{M}\:{boule}\:{noires} \\ $$$${on}\:{tire}\:{successivement}\:{et}\:{sans}\:{remise} \\ $$$${n}\:{boules}\:{de}\:{l}'{urne}. \\ $$$${soit}\:{A}_{{i}} :''{prelever}\:{une}\:{boules}\:{noires}\:{au}\:{ieme} \\ $$$${tirage}'' \\ $$$${calculer}\:{P}\left({A}_{{i}} \right) \\…

Question Number 145553 by puissant last updated on 05/Jul/21 Answered by Olaf_Thorendsen last updated on 06/Jul/21 $${On}\:{a}\:{vu}\:{dans}\:{une}\:{question}\: \\ $$$${precedente}\:{que}\:\left(\mathrm{Q}.\mathrm{145557}\right)\:: \\ $$$$\mathrm{C}_{{p}+{q}} ^{{n}} \:=\:\underset{{k}=\mathrm{0}} {\overset{{n}} {\sum}}\mathrm{C}_{{p}}…

Question Number 145467 by puissant last updated on 05/Jul/21 Answered by Olaf_Thorendsen last updated on 05/Jul/21 $$\left.{a}\right) \\ $$$$\mathrm{Pour}\:\mathrm{former}\:\mathrm{une}\:\mathrm{partie}\:\mathrm{B}\:\mathrm{de}\:\mathrm{E}\:\mathrm{a}\:{k} \\ $$$$\mathrm{elements},\:\mathrm{qui}\:\mathrm{contienne}\:\mathrm{un}\:\mathrm{seul} \\ $$$$\mathrm{elements}\:\mathrm{de}\:\mathrm{A},\:\mathrm{il}\:\mathrm{faut}\:: \\ $$$$−\mathrm{choisir}\:\mathrm{un}\:\mathrm{element}\:\mathrm{de}\:\mathrm{A},\:\mathrm{ce}\:\mathrm{qui}\:\mathrm{se}…

Question Number 145373 by puissant last updated on 04/Jul/21 Answered by Olaf_Thorendsen last updated on 04/Jul/21 $$\left.\mathrm{1}{a}\right) \\ $$$$ \\ $$$$\mathrm{Le}\:\mathrm{rat}\:\mathrm{n}'\mathrm{a}\:\mathrm{pas}\:\mathrm{de}\:\mathrm{memoire}. \\ $$$$\mathrm{A}\:\mathrm{chaque}\:\mathrm{essai},\:\mathrm{il}\:\mathrm{a}\:\mathrm{3}\:\mathrm{chances}\:\mathrm{sur}\:\mathrm{4}\:\mathrm{de} \\ $$$$\mathrm{choisir}\:\mathrm{une}\:\mathrm{mauvaise}\:\mathrm{porte}\:\mathrm{et}\:\mathrm{une}\:\mathrm{chance}…

Question Number 14171 by A WLAN last updated on 29/May/17 Terms of Service Privacy Policy Contact: info@tinkutara.com