Probability of min(x,y)<1 [closed]












-1












$begingroup$


How can I solve this?



$f_{xy}(x,y)$ is a joint probability distribution defined by



$$f_{xy}(x,y)=ye^{-y(1+x)}$$ for $ x,y>0$.
And for other $x,y$ the joint probability distribution defiend by
$$f_{xy}(x,y)=0$$



And the Question is Find the probability of:
P(min(x,y)<1)=?
Please Write Your Full Answer.










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closed as off-topic by Eevee Trainer, StubbornAtom, Lee David Chung Lin, Saad, caverac Jan 5 at 9:06


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Eevee Trainer, Lee David Chung Lin, Saad

If this question can be reworded to fit the rules in the help center, please edit the question.












  • 1




    $begingroup$
    Draw the region ${min(x,y) < 1}$ on the $x$-$y$ plane and integrate the density over that region.
    $endgroup$
    – angryavian
    Jan 5 at 6:18






  • 1




    $begingroup$
    Possible duplicate of Can You Help me ?A simple Probability Question
    $endgroup$
    – StubbornAtom
    Jan 5 at 7:27
















-1












$begingroup$


How can I solve this?



$f_{xy}(x,y)$ is a joint probability distribution defined by



$$f_{xy}(x,y)=ye^{-y(1+x)}$$ for $ x,y>0$.
And for other $x,y$ the joint probability distribution defiend by
$$f_{xy}(x,y)=0$$



And the Question is Find the probability of:
P(min(x,y)<1)=?
Please Write Your Full Answer.










share|cite|improve this question









$endgroup$



closed as off-topic by Eevee Trainer, StubbornAtom, Lee David Chung Lin, Saad, caverac Jan 5 at 9:06


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Eevee Trainer, Lee David Chung Lin, Saad

If this question can be reworded to fit the rules in the help center, please edit the question.












  • 1




    $begingroup$
    Draw the region ${min(x,y) < 1}$ on the $x$-$y$ plane and integrate the density over that region.
    $endgroup$
    – angryavian
    Jan 5 at 6:18






  • 1




    $begingroup$
    Possible duplicate of Can You Help me ?A simple Probability Question
    $endgroup$
    – StubbornAtom
    Jan 5 at 7:27














-1












-1








-1





$begingroup$


How can I solve this?



$f_{xy}(x,y)$ is a joint probability distribution defined by



$$f_{xy}(x,y)=ye^{-y(1+x)}$$ for $ x,y>0$.
And for other $x,y$ the joint probability distribution defiend by
$$f_{xy}(x,y)=0$$



And the Question is Find the probability of:
P(min(x,y)<1)=?
Please Write Your Full Answer.










share|cite|improve this question









$endgroup$




How can I solve this?



$f_{xy}(x,y)$ is a joint probability distribution defined by



$$f_{xy}(x,y)=ye^{-y(1+x)}$$ for $ x,y>0$.
And for other $x,y$ the joint probability distribution defiend by
$$f_{xy}(x,y)=0$$



And the Question is Find the probability of:
P(min(x,y)<1)=?
Please Write Your Full Answer.







probability






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 5 at 6:14









Mobina KMobina K

194




194




closed as off-topic by Eevee Trainer, StubbornAtom, Lee David Chung Lin, Saad, caverac Jan 5 at 9:06


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Eevee Trainer, Lee David Chung Lin, Saad

If this question can be reworded to fit the rules in the help center, please edit the question.







closed as off-topic by Eevee Trainer, StubbornAtom, Lee David Chung Lin, Saad, caverac Jan 5 at 9:06


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please provide additional context, which ideally explains why the question is relevant to you and our community. Some forms of context include: background and motivation, relevant definitions, source, possible strategies, your current progress, why the question is interesting or important, etc." – Eevee Trainer, Lee David Chung Lin, Saad

If this question can be reworded to fit the rules in the help center, please edit the question.








  • 1




    $begingroup$
    Draw the region ${min(x,y) < 1}$ on the $x$-$y$ plane and integrate the density over that region.
    $endgroup$
    – angryavian
    Jan 5 at 6:18






  • 1




    $begingroup$
    Possible duplicate of Can You Help me ?A simple Probability Question
    $endgroup$
    – StubbornAtom
    Jan 5 at 7:27














  • 1




    $begingroup$
    Draw the region ${min(x,y) < 1}$ on the $x$-$y$ plane and integrate the density over that region.
    $endgroup$
    – angryavian
    Jan 5 at 6:18






  • 1




    $begingroup$
    Possible duplicate of Can You Help me ?A simple Probability Question
    $endgroup$
    – StubbornAtom
    Jan 5 at 7:27








1




1




$begingroup$
Draw the region ${min(x,y) < 1}$ on the $x$-$y$ plane and integrate the density over that region.
$endgroup$
– angryavian
Jan 5 at 6:18




$begingroup$
Draw the region ${min(x,y) < 1}$ on the $x$-$y$ plane and integrate the density over that region.
$endgroup$
– angryavian
Jan 5 at 6:18




1




1




$begingroup$
Possible duplicate of Can You Help me ?A simple Probability Question
$endgroup$
– StubbornAtom
Jan 5 at 7:27




$begingroup$
Possible duplicate of Can You Help me ?A simple Probability Question
$endgroup$
– StubbornAtom
Jan 5 at 7:27










1 Answer
1






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$begingroup$

$$P(min(x,y)<1)=1-P(min(x,y)geq 1) = 1-P(xgeq 1,ygeq 1)$$
$$ = 1-int_{1}^{infty} int_{1}^{infty} ye^{-y(x+1)}dxdy.$$
So we have that
$$P(min(x,y)<1) = 1-int_{1}^{infty}e^{-(y+1)}dy=1-frac{1}{e^2}.$$






share|cite|improve this answer









$endgroup$




















    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0












    $begingroup$

    $$P(min(x,y)<1)=1-P(min(x,y)geq 1) = 1-P(xgeq 1,ygeq 1)$$
    $$ = 1-int_{1}^{infty} int_{1}^{infty} ye^{-y(x+1)}dxdy.$$
    So we have that
    $$P(min(x,y)<1) = 1-int_{1}^{infty}e^{-(y+1)}dy=1-frac{1}{e^2}.$$






    share|cite|improve this answer









    $endgroup$


















      0












      $begingroup$

      $$P(min(x,y)<1)=1-P(min(x,y)geq 1) = 1-P(xgeq 1,ygeq 1)$$
      $$ = 1-int_{1}^{infty} int_{1}^{infty} ye^{-y(x+1)}dxdy.$$
      So we have that
      $$P(min(x,y)<1) = 1-int_{1}^{infty}e^{-(y+1)}dy=1-frac{1}{e^2}.$$






      share|cite|improve this answer









      $endgroup$
















        0












        0








        0





        $begingroup$

        $$P(min(x,y)<1)=1-P(min(x,y)geq 1) = 1-P(xgeq 1,ygeq 1)$$
        $$ = 1-int_{1}^{infty} int_{1}^{infty} ye^{-y(x+1)}dxdy.$$
        So we have that
        $$P(min(x,y)<1) = 1-int_{1}^{infty}e^{-(y+1)}dy=1-frac{1}{e^2}.$$






        share|cite|improve this answer









        $endgroup$



        $$P(min(x,y)<1)=1-P(min(x,y)geq 1) = 1-P(xgeq 1,ygeq 1)$$
        $$ = 1-int_{1}^{infty} int_{1}^{infty} ye^{-y(x+1)}dxdy.$$
        So we have that
        $$P(min(x,y)<1) = 1-int_{1}^{infty}e^{-(y+1)}dy=1-frac{1}{e^2}.$$







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Jan 5 at 6:21









        model_checkermodel_checker

        4,14621931




        4,14621931















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