+0  
 
-2
45
2
avatar+1150 

Please help asap!!

RainbowPanda  Apr 4, 2018
Sort: 

2+0 Answers

 #1
avatar+85958 
+2

Not that great at this either, RP...but...I think I can do a few

 

 

We have  6 * 4  = 24 possible outcomes.....here is the sample space :

 

 

Sum  = (a, b)  =  (result of 4-sided die, result of 6-sided die )

2 = (1,1)

3 =(1,2) (2,1)

4 = (1,3) (3,1) (2,2)

5 = (1,4) (4,1) (2,3) (3,2) 

6 = (2,4) (4,2) (3,3) (1,5)

7 = (2,5) (1,6) (3,4) (4,3)

8 = (4, 4)  (3,5) (2,6)

9 = (4,5) (3,6)

10 = (4,6)

 

P(A)=   the six-sided die is 3  ....

We have the following possibilities  ......    (1,3) (2,3) (3,3) (4,3)

So P(A)  =  4/24   = 1/6

 

 

P(B)=  sum of the dice is 5  or less  = 10 possibilities

So  P(B)  =  10/24  = 5/12

 

 

P (A  l B)  =  Probability the six-sided die is 3, given that the sum of the die is 5 or less

If we let  the first number represent the result of the 4 sided die  and the second number the result of the 6-sided die, we have the following possibilites  (1,3)  and (2,3)  = 2 possibilities

And the number of results l of 5 or less = 10 possibilities  

So  P (A l  B)  =     2/10   = 1/5

 

 

P(B l A)  =  Probability that the sum of the dice  is 5, given that the six-sided is 3

We have the following possibilites for the six-sided die  = 3

(1,3) (2,3)  (3,3)  (4,3) = 4 possibilities

Notice that  there's only one thing that sums to 5  ⇒  (2,3)

So  P(B l A)  =  1 / 4

 

P (A and B )  = Probabilitiy  that six-sided die is 3 and the sum of the die  is 5 or less

Note : P(A  and B)   = P(A) * P(B)  = (1/6)  * (5/12)   =   5 / 72

 

 

P(A)  * P (B l A)  =  (1/6) * (1/4)  =  1/24

 

P (B) * P( A l B)  =  (5/12) * (1/5)  =  1/12

 

 

 

cool cool cool

CPhill  Apr 4, 2018
edited by CPhill  Apr 4, 2018
 #2
avatar+1150 
-1

Darn it was wrong but thanks for helping tho

P (A)=1/6

P (B)=5/12

P(A|B)=1/5

P(B|A)=1/2

P (A and B)=1/12

P (A)*P(B|A)=1/12

P(B)*P(A|B)=1/12

RainbowPanda  Apr 4, 2018

23 Online Users

avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details