Question Number 180733 by srikanth2684 last updated on 16/Nov/22 $${let}\:{X}\:{have}\:{a}\:{Bernoulli}\:{distribution}\: \\ $$$${with}\:{mean}\:\mathrm{0}.\mathrm{4}\:,\:{then}\:{the}\:{variance} \\ $$$${of}\:\mathrm{2}{X}−\mathrm{3}\:{is} \\ $$$${pls}\:{solve} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 180734 by srikanth2684 last updated on 16/Nov/22 $${If}\:{f}\left({x}\right)=\left\{_{\mathrm{0},\:{othrrwise}} ^{\mathrm{2}{x}\:,\:\mathrm{0}\leqslant{x}\leqslant{a}} \:{is}\:{a}\:{probability}\right. \\ $$$${density}\:{funtion}\:{of}\:{a}\:{random}\: \\ $$$${variable},\:{then}\:{a}=? \\ $$$${pls}\:{solve} \\ $$ Answered by cortano1 last updated…
Question Number 180576 by Acem last updated on 14/Nov/22 Commented by Acem last updated on 14/Nov/22 $${a}\bullet\:{What}'{s}\:{the}\:{probability}\:{that}\:{Rosy}\:{would}\:{stand} \\ $$$$\:{on}\:{the}\:{far}\:{left}\:{and}\:{Nathalie}\:{on}\:{the}\:{far}\:{right}? \\ $$$${b}\bullet\:{Same}\:{question}\:{but}\:{and}\:{you}\:{stand}\:{in}\:{the}\:{middle} \\ $$$$\:{in}\:{case}\:{you}\:{were}\:\mathrm{11}\:{person}? \\ $$$${c}\bullet\:{Same}\:{question}\:'{a}'\:{but}\:{or}\:{you}\:{stand}\:{on}\:{the}\:\mathrm{2}{nd}…
Question Number 180558 by Acem last updated on 13/Nov/22 $${The}\:{football}\:{team}\:{meets}\:{in}\:{a}\:{circle}\:{to}\:{consult} \\ $$$$\:{about}\:{some}\:{plan}\:{to}\:{play},\:{what}'{s}\:{the}\:{probability} \\ $$$$\:{that}\:{the}\:{one}\:{player}\:{of}\:{the}\:{opponent}\:{team}\:{who}'{s} \\ $$$$\:{trying}\:{to}\:{eavesdrops}\:{is}\:{standing}\:{behind}\:{the} \\ $$$$\:{goalkeeper}? \\ $$ Answered by Acem last updated…
Question Number 180553 by Acem last updated on 13/Nov/22 Commented by Acem last updated on 13/Nov/22 $${What}'{s}\:{the}\:{probability}\:{that}\:{this}\:{bracelet}\:{will}\:{look} \\ $$$$\:{like}\:{this}? \\ $$ Commented by Acem last…
Question Number 114875 by bobhans last updated on 21/Sep/20 $${A}\:{man}\:{sent}\:\mathrm{7}\:{letters}\:{to}\:{his}\:\mathrm{7}\:{friend}\:. \\ $$$${the}\:{letters}\:{are}\:{kept}\:{in}\:{addressed}\:{envelopes} \\ $$$${at}\:{random}.\:{the}\:{probability}\:{that}\:\mathrm{3}\:{friends} \\ $$$${receive}\:{correct}\:{letters}\:{and}\:\mathrm{4}\:{letters}\:{go} \\ $$$${to}\:{wrong}\:{destination}\:{is}\:\_ \\ $$$$ \\ $$$$\left({old}\:{question}\:{unanswered}\right) \\ $$ Answered…
Question Number 180340 by srikanth2684 last updated on 17/Nov/22 $${please}\:{answer}\:{this}\:{question} \\ $$$${i}\:{have}\:{no}\:{idea}\:{to}\:{post}\:{an}\:{image}.\:{it}\:{is}\: \\ $$$${sent}\:{by}\:{mistke}. \\ $$ Commented by mr W last updated on 10/Nov/22 $${but}\:{this}\:{is}\:{not}\:{a}\:{question}\:{people}\:{can}…
Question Number 180200 by Acem last updated on 09/Nov/22 $$\left.\boldsymbol{{A}}\right)\:{How}\:{many}\:{even}\:{numbers}\:{of}\:\mathrm{3}\:{different}\:{digits} \\ $$$$\:{bigger}\:{than}\:\mathrm{300}\:{can}\:{be}\:{formed}\:{from}\:\left\{\mathrm{1},\:\mathrm{2},\:\mathrm{3},\:\mathrm{4}\right\} \\ $$$$\left.\boldsymbol{{B}}\right)\:{How}\:{many}\:{numbers}\:{bigger}\:{than}\:\mathrm{300}\:{can} \\ $$$$\:\:\:\:\:\:\:\:{be}\:{formed}\:{from}\:{the}\:{same}\:{group} \\ $$ Commented by Frix last updated on 09/Nov/22…
Question Number 180192 by Acem last updated on 08/Nov/22 $${With}\:\mathrm{3}\:{blue},\:\mathrm{2}\:{red}\:{and}\:\mathrm{2}\:{pink}\:{beads}\:{how}\:{many} \\ $$$$\:{necklaces}\:{can}\:{be}\:{made}\:{if}\:{there}: \\ $$$$\:{a}\bullet\:{is}\:{no}\:{clasp}\:\:\:\:\:\:{b}\bullet\:{is}\:{a}\:{clasp} \\ $$$$\: \\ $$ Commented by mr W last updated on…
Question Number 180190 by Ar Brandon last updated on 08/Nov/22 Answered by Acem last updated on 09/Nov/22 $$\:{X}\left(\Omega\right)=\:\left\{\mathrm{5},\:\mathrm{2},\:\mathrm{1},\:\mathrm{0}\right\}\:;\:{P}\left({X}=\mathrm{0}\right)=\:\mathrm{0}.\mathrm{4} \\ $$$$ \\ $$$$\:{x}_{{i}} \:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{5}\:\:\:\:\:\:\:\:\:\mathrm{2}\:\:\:\:\:\:\:\:\mathrm{1}\:\:\:\:\:\:\:\:\:\mathrm{0} \\ $$$${P}\left({X}\:={x}_{{i}}…