## Pulsified333 one year ago Construct a copy of figure 3.14 in your text, where the first outcome is one of A and B the second outcome in each case is one of a and b. Use the following probabilities instead of those given in your text: Pr[A]=1/3 Pr[B]=2/3 Pr[a|A]=2/5 Pr[b|A]=3/5 Pr[a|B]=1/7 Pr[b|B]=6/7 Find the following missing probabilities: (1) Pr[B]= 2/3 (2) Pr[b]= (3) Pr[b|B]= (4) Pr[B|b]=

1. Pulsified333

@satellite73

2. Pulsified333

@dan815

3. anonymous

the text would help, kinda hard to know otherwise

4. Pulsified333

@satellite73 |dw:1444096686685:dw|

5. Pulsified333

All we need is #4

6. dan815

what did u do for 3

7. Pulsified333

3. is 6/7

8. dan815

|dw:1444098933716:dw|

9. dan815

|dw:1444098977842:dw|

10. dan815

|dw:1444099044460:dw|

11. Pulsified333

but the bottom when you add it becomes greater than 1

12. dan815

oops i mean 2/3

13. dan815

actually nvm no this is right

14. Pulsified333

which is right

15. dan815

|dw:1444099171515:dw|

16. dan815

check if that is the right answer

17. Pulsified333

no

18. dan815

oh i found a mistake :)

19. dan815

i think i know the answer hehe

20. Pulsified333

??

21. Pulsified333

do tell my friend

22. dan815

|dw:1444099561543:dw|

23. dan815

let me think about that hmm

24. Pulsified333

okay

25. dan815

ya okay try it

26. dan815

is it right?

27. Pulsified333

hold on still doing calculations

28. Pulsified333

would it be (12/21)/(81/105)?

29. dan815

20/27

30. Pulsified333

so 20/27 ?

31. Pulsified333

it was right

32. Pulsified333

:D

33. dan815

ok great

34. dan815

what i did it was just think about it like areas

35. dan815

(the area of B in b)/ area of b

36. Pulsified333

ah I get it :D