Finding how 3 hunter can share their prey












0












$begingroup$


Three hunters hit the moving target with probabilities $0,6, 0,4$ and $0,2$. When they saw a deer they shot in one time. After it they saw that only one bullet reached the target. So how they can shere a prey?



I think first I need to find $mathbb{P}(X)$ where $X$ is event that deer was shot. $mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C)) $ am I right? When I will find it I will make a proportion and will find how they can share a prey.



So if I am right, I have problem. I think I am doing something wrong.
$mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C))=
mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C})) +mathbb{P} (overline{A}cap overline{B} cap C) - mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))=
mathbb{P}(Acap overline{B}cap overline{C}) + mathbb{P}((overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))-mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+mathbb{P} (overline{A}cap overline{B} cap C) -
mathbb{P} (Acap overline{B}cap overline{C}) - mathbb{P}( (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+ mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))= ?$
Where is my mistake and how I can continue it? Maybe there is easier way?










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$endgroup$

















    0












    $begingroup$


    Three hunters hit the moving target with probabilities $0,6, 0,4$ and $0,2$. When they saw a deer they shot in one time. After it they saw that only one bullet reached the target. So how they can shere a prey?



    I think first I need to find $mathbb{P}(X)$ where $X$ is event that deer was shot. $mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C)) $ am I right? When I will find it I will make a proportion and will find how they can share a prey.



    So if I am right, I have problem. I think I am doing something wrong.
    $mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C))=
    mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C})) +mathbb{P} (overline{A}cap overline{B} cap C) - mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))=
    mathbb{P}(Acap overline{B}cap overline{C}) + mathbb{P}((overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))-mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+mathbb{P} (overline{A}cap overline{B} cap C) -
    mathbb{P} (Acap overline{B}cap overline{C}) - mathbb{P}( (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+ mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))= ?$
    Where is my mistake and how I can continue it? Maybe there is easier way?










    share|cite|improve this question









    $endgroup$















      0












      0








      0





      $begingroup$


      Three hunters hit the moving target with probabilities $0,6, 0,4$ and $0,2$. When they saw a deer they shot in one time. After it they saw that only one bullet reached the target. So how they can shere a prey?



      I think first I need to find $mathbb{P}(X)$ where $X$ is event that deer was shot. $mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C)) $ am I right? When I will find it I will make a proportion and will find how they can share a prey.



      So if I am right, I have problem. I think I am doing something wrong.
      $mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C))=
      mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C})) +mathbb{P} (overline{A}cap overline{B} cap C) - mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))=
      mathbb{P}(Acap overline{B}cap overline{C}) + mathbb{P}((overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))-mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+mathbb{P} (overline{A}cap overline{B} cap C) -
      mathbb{P} (Acap overline{B}cap overline{C}) - mathbb{P}( (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+ mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))= ?$
      Where is my mistake and how I can continue it? Maybe there is easier way?










      share|cite|improve this question









      $endgroup$




      Three hunters hit the moving target with probabilities $0,6, 0,4$ and $0,2$. When they saw a deer they shot in one time. After it they saw that only one bullet reached the target. So how they can shere a prey?



      I think first I need to find $mathbb{P}(X)$ where $X$ is event that deer was shot. $mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C)) $ am I right? When I will find it I will make a proportion and will find how they can share a prey.



      So if I am right, I have problem. I think I am doing something wrong.
      $mathbb{P}(X)=mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cup (overline{A}cap overline{B} cap C))=
      mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C})) +mathbb{P} (overline{A}cap overline{B} cap C) - mathbb{P}( (Acap overline{B}cap overline{C}) cup (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))=
      mathbb{P}(Acap overline{B}cap overline{C}) + mathbb{P}((overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))-mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+mathbb{P} (overline{A}cap overline{B} cap C) -
      mathbb{P} (Acap overline{B}cap overline{C}) - mathbb{P}( (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))+ mathbb{P}( (Acap overline{B}cap overline{C}) cap (overline{A}cap B cap overline{C}) cap (overline{A}cap overline{B} cap C))= ?$
      Where is my mistake and how I can continue it? Maybe there is easier way?







      probability probability-theory random-variables






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      asked Dec 11 '18 at 4:49









      AtstovasAtstovas

      1139




      1139






















          1 Answer
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          $begingroup$

          $X$ should be the event the deer was shot exactly once, because that is the information you have. You are trying to assess $P(A|X)$, the chance that $A$ hit the deer given that exactly one person hit the deer, and the same for the other two. The probability that $A$ hit and the others did not is $0.6cdot (1-0.4) cdot (1-0.2)=0.288$. Compute the corresponding probability for the other two and scale up to make the sum be $1$.






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            So $mathbb{P}(A|X)=0.288$ $mathbb{P}(B|X)=0.192$ $mathbb{P}(C|X)=0.048$ than $0.288+0.192+0.048=0,528$ Whats next? For first hunter it will be $ 0.288/0.528=0.(54)$ for second $0.192/0.528=0.(36)$ and for third hunter $0.048/0.528=0.(09)$ right?
            $endgroup$
            – Atstovas
            Dec 11 '18 at 5:45












          • $begingroup$
            Your result is correct but your notation is wrong. Based on your calculation $P(A|X)=frac {54}{99}$ which is what you mean by $0.(54)$
            $endgroup$
            – Ross Millikan
            Dec 11 '18 at 5:54














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          active

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          1












          $begingroup$

          $X$ should be the event the deer was shot exactly once, because that is the information you have. You are trying to assess $P(A|X)$, the chance that $A$ hit the deer given that exactly one person hit the deer, and the same for the other two. The probability that $A$ hit and the others did not is $0.6cdot (1-0.4) cdot (1-0.2)=0.288$. Compute the corresponding probability for the other two and scale up to make the sum be $1$.






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            So $mathbb{P}(A|X)=0.288$ $mathbb{P}(B|X)=0.192$ $mathbb{P}(C|X)=0.048$ than $0.288+0.192+0.048=0,528$ Whats next? For first hunter it will be $ 0.288/0.528=0.(54)$ for second $0.192/0.528=0.(36)$ and for third hunter $0.048/0.528=0.(09)$ right?
            $endgroup$
            – Atstovas
            Dec 11 '18 at 5:45












          • $begingroup$
            Your result is correct but your notation is wrong. Based on your calculation $P(A|X)=frac {54}{99}$ which is what you mean by $0.(54)$
            $endgroup$
            – Ross Millikan
            Dec 11 '18 at 5:54


















          1












          $begingroup$

          $X$ should be the event the deer was shot exactly once, because that is the information you have. You are trying to assess $P(A|X)$, the chance that $A$ hit the deer given that exactly one person hit the deer, and the same for the other two. The probability that $A$ hit and the others did not is $0.6cdot (1-0.4) cdot (1-0.2)=0.288$. Compute the corresponding probability for the other two and scale up to make the sum be $1$.






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            So $mathbb{P}(A|X)=0.288$ $mathbb{P}(B|X)=0.192$ $mathbb{P}(C|X)=0.048$ than $0.288+0.192+0.048=0,528$ Whats next? For first hunter it will be $ 0.288/0.528=0.(54)$ for second $0.192/0.528=0.(36)$ and for third hunter $0.048/0.528=0.(09)$ right?
            $endgroup$
            – Atstovas
            Dec 11 '18 at 5:45












          • $begingroup$
            Your result is correct but your notation is wrong. Based on your calculation $P(A|X)=frac {54}{99}$ which is what you mean by $0.(54)$
            $endgroup$
            – Ross Millikan
            Dec 11 '18 at 5:54
















          1












          1








          1





          $begingroup$

          $X$ should be the event the deer was shot exactly once, because that is the information you have. You are trying to assess $P(A|X)$, the chance that $A$ hit the deer given that exactly one person hit the deer, and the same for the other two. The probability that $A$ hit and the others did not is $0.6cdot (1-0.4) cdot (1-0.2)=0.288$. Compute the corresponding probability for the other two and scale up to make the sum be $1$.






          share|cite|improve this answer









          $endgroup$



          $X$ should be the event the deer was shot exactly once, because that is the information you have. You are trying to assess $P(A|X)$, the chance that $A$ hit the deer given that exactly one person hit the deer, and the same for the other two. The probability that $A$ hit and the others did not is $0.6cdot (1-0.4) cdot (1-0.2)=0.288$. Compute the corresponding probability for the other two and scale up to make the sum be $1$.







          share|cite|improve this answer












          share|cite|improve this answer



          share|cite|improve this answer










          answered Dec 11 '18 at 4:57









          Ross MillikanRoss Millikan

          300k24200375




          300k24200375












          • $begingroup$
            So $mathbb{P}(A|X)=0.288$ $mathbb{P}(B|X)=0.192$ $mathbb{P}(C|X)=0.048$ than $0.288+0.192+0.048=0,528$ Whats next? For first hunter it will be $ 0.288/0.528=0.(54)$ for second $0.192/0.528=0.(36)$ and for third hunter $0.048/0.528=0.(09)$ right?
            $endgroup$
            – Atstovas
            Dec 11 '18 at 5:45












          • $begingroup$
            Your result is correct but your notation is wrong. Based on your calculation $P(A|X)=frac {54}{99}$ which is what you mean by $0.(54)$
            $endgroup$
            – Ross Millikan
            Dec 11 '18 at 5:54




















          • $begingroup$
            So $mathbb{P}(A|X)=0.288$ $mathbb{P}(B|X)=0.192$ $mathbb{P}(C|X)=0.048$ than $0.288+0.192+0.048=0,528$ Whats next? For first hunter it will be $ 0.288/0.528=0.(54)$ for second $0.192/0.528=0.(36)$ and for third hunter $0.048/0.528=0.(09)$ right?
            $endgroup$
            – Atstovas
            Dec 11 '18 at 5:45












          • $begingroup$
            Your result is correct but your notation is wrong. Based on your calculation $P(A|X)=frac {54}{99}$ which is what you mean by $0.(54)$
            $endgroup$
            – Ross Millikan
            Dec 11 '18 at 5:54


















          $begingroup$
          So $mathbb{P}(A|X)=0.288$ $mathbb{P}(B|X)=0.192$ $mathbb{P}(C|X)=0.048$ than $0.288+0.192+0.048=0,528$ Whats next? For first hunter it will be $ 0.288/0.528=0.(54)$ for second $0.192/0.528=0.(36)$ and for third hunter $0.048/0.528=0.(09)$ right?
          $endgroup$
          – Atstovas
          Dec 11 '18 at 5:45






          $begingroup$
          So $mathbb{P}(A|X)=0.288$ $mathbb{P}(B|X)=0.192$ $mathbb{P}(C|X)=0.048$ than $0.288+0.192+0.048=0,528$ Whats next? For first hunter it will be $ 0.288/0.528=0.(54)$ for second $0.192/0.528=0.(36)$ and for third hunter $0.048/0.528=0.(09)$ right?
          $endgroup$
          – Atstovas
          Dec 11 '18 at 5:45














          $begingroup$
          Your result is correct but your notation is wrong. Based on your calculation $P(A|X)=frac {54}{99}$ which is what you mean by $0.(54)$
          $endgroup$
          – Ross Millikan
          Dec 11 '18 at 5:54






          $begingroup$
          Your result is correct but your notation is wrong. Based on your calculation $P(A|X)=frac {54}{99}$ which is what you mean by $0.(54)$
          $endgroup$
          – Ross Millikan
          Dec 11 '18 at 5:54




















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