- #1
dragon513
- 26
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Q. A box contains three blue marbles, five red marbles, and four white marbles. If one marble is drawn at random, find:
a) P(blue|not white)
b) P(not red|not white)
The answer for both a) and b) is 3/8.
However right now I don't even understand the question.
part a) wants possibility of getting a blue ball given that white wasn't drawn.
So... NOT getting a white ball is 8/12.
Given that, getting a blue ball is 3/11.
but 3/11 is not even close to 3/8!
What's wrong with my work?
Thanks in advance!
a) P(blue|not white)
b) P(not red|not white)
The answer for both a) and b) is 3/8.
However right now I don't even understand the question.
part a) wants possibility of getting a blue ball given that white wasn't drawn.
So... NOT getting a white ball is 8/12.
Given that, getting a blue ball is 3/11.
but 3/11 is not even close to 3/8!
What's wrong with my work?
Thanks in advance!