• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

probability question

P

PurdueRy

Lifer
Two numbers are chosen at random on the interval [0,1]. Find the probability that they differ by more than 1/2.

I have the answer but I am more interested in how to get it rather than just memorizing 😉
 
hm let's think in a discrete way first. assume the number can be from the list 0.05, 0.15, 0.25, .. 0.85, 0.95, with equal chance each (10%). If the first number is 0.05, there is a 50% chance the 2 numbers chosen will be 0.5 apart. for 0.15, the chance is 0.4, and so on. So the average probability is... 0.3. So is 30% the right answer?
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top