Carla1985
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I have this question:
View attachment 690and I'm a little confused. To calculate joint distributions in the earlier questions i was using:[tex]P_{(\xi1,\xi2)}(x1,x2)=P_{(\xi1)}(x1)P_{(\xi2)}(x2)[/tex]But that would mean that if:[tex]P_{(\xi1,\xi2)}(2,0)=0\ either\ P_{(\xi1)}(2)=0\ or\ P_{(\xi2)}(0)=0[/tex]which can't be true in either case as [tex]P_{(\xi1,\xi2)}(1,0)\ isnt\ 0\ and\ neither\ is\ P_{(\xi1,\xi2)}(2,1)[/tex]Can someone please explain what I'm missing. Thanks :/
View attachment 690and I'm a little confused. To calculate joint distributions in the earlier questions i was using:[tex]P_{(\xi1,\xi2)}(x1,x2)=P_{(\xi1)}(x1)P_{(\xi2)}(x2)[/tex]But that would mean that if:[tex]P_{(\xi1,\xi2)}(2,0)=0\ either\ P_{(\xi1)}(2)=0\ or\ P_{(\xi2)}(0)=0[/tex]which can't be true in either case as [tex]P_{(\xi1,\xi2)}(1,0)\ isnt\ 0\ and\ neither\ is\ P_{(\xi1,\xi2)}(2,1)[/tex]Can someone please explain what I'm missing. Thanks :/
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