1.A five sided die with the sides showing the numbers 1 through 5.If you have two die and roll both of them,

a.List the events that would have to occur for the sum of the die to equal eight.

b.What is the probability of that the event of the die adding up to eight happening,p(sum of 8)= ?

c.Draw a tree diagram for this sample space.

 

2. A box containing 4 red marbles and 2 black marbles.Consider the two stage experient of randomly selecting a marble from the box,replacing the marble and randomly selecting a second time. 

a.What is probability of selecting a red marble first and then a black marble second? P(R,B)=?

b.What is the probability of selecting one red marble? P(R)=?

 

 

guys plz help me,it's due after thanx givin'.

                                                                 

 

 

for 2.
a. 1/4
b. 2/3... is ur 2b mistyped? u said its a two staged experiment. n u r asking for a prob of getting 1 Red marble???

as far as Q1 is concerned. its too long to type in here.... TREE diagram.. omg!!! u pm me ur hotmail id. i will explain it there..
happy thanksgiving.

Thanx rituman,

u can e-mail me on J_chettry@ yahoo .

 

       j_chettry@yahoo

 rituman,

 u r supposed to send me probabilty tree what happenned?i haven't gotten them yet.

 

i don't know abt this problem otherwise i would help u.