Chewing Gum in Puzzlaria
Gum chewers comprise 78% of all the people of Puzzlaria.
People under the age of 15 are 35% of the population.
If you select a Puzzlarian resident at random, what is the probability that the person is not a gum chewer and above the age of 15?
People under the age of 15 are 35% of the population.
If you select a Puzzlarian resident at random, what is the probability that the person is not a gum chewer and above the age of 15?
posted by Zaux at
12:32 PM
5 Comments:
Would you let your baby choke on chewing gum?
Assuming that you would, the obvious answer would appear to be 65% * 22% = 14.3%.
Because it's the obvious answer it's probably the wrong answer.
So, either I'm right in my answer or right in thinking it's wrong.
Either way, I win.
I concur with Wiz. Prob of > 15 = 1 - 0.35 = 0.65
Prob of non-chewer = 1 - 0.78 = 0.22
Altogether => 0.22*0.65 = 0.143
Wiz, is there anoher way of looking at this?
Wiz and I assumed that it is equally likely that you are a gum chewer regardless of you age.
excuse me for a moment ... have to discard my gum ....
...
...
...
...
oh yeah, you guys are right
Zaux. I calculate that you must be 78% of the people of Puzzlaria.
Post a Comment
Links to this post:
Create a Link
<< Home