1 answer:
So for these problems you just need to get all x values on one side of the equal sign. Since this has just an x and not other x values we can leave the x there on the left. Now subtract 5 on both sides to get rid of the 5 on left side of the equals sign. Subtract 5 on the right side too because anything that you do on the left side, you do on the right side as well. It should look like this now:
Hope this helps!
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Answer:
Probability that the fifth ball selected is red = 0.705
Step-by-step explanation:
Let
= Number of red balls after the 4th turn
⇒ ∈ { 0, 1, 2 }
Then,
P =
⇒
Now,
P(5th ball is red | = 2 ) = 0.
+
=
= 0.705
∴ we get
Probability that the fifth ball selected is red = 0.705