Question

30 points and I will mark you the brainlyiest


There are 4 white marbles and 1 black marble in a bag. You draw two marbles, one after the other. Is the probability for both of the marbles to be white higher if you replace the first marble drawn or higher if you do not replace it?


1:the same in either case

2:higher if you don't replace the first marble

3:higher if you replace the first marble

Answer 1

Answer:

2

Step-by-step explanation:

Look at the picture. That's the probability tree for this question. Since you replace the marble, the second branch will only have 4 outcomes

(4/5)*(3/4)=(3/5)

Look at the second picture. That's what'll happen if you do replace the marble and it'll have 5 outcomes

(4/5)*(4/5)=16/25

If you make the denominators the same, itll be 15/25 if you replace the marble

And 16/25 if you don't replace the marble

Since 16/25 > 15/25, it'll be higher if you don't replace the first marble.

:))