Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Hi, I have a simple probability problem that I need help with. <BR><BR>I have two groups of marbles, blue and red, 4 each, for a total of 8. I am trying to figure out what the probability is of ...

We consider a one-dimensional simple random walk surviving among a field of static soft obstacles: each time it meets an obstacle the walk is killed with probability 1 − e−β, where β is a positive and ...

An animated guide to probability explains how to express probability as fractions and percentages based on the ratio of the number of ways an outcome can happen and the total number of outcomes.

Pick three points at random anywhere on the globe. What is the probability that all three of the points will be in the same hemisphere? The Hint Don’t know where to start? Play around on Google Earth ...

One approach to the waiting-time problem is through the integral equation, whose solution is the cumulative probability function-the method derived by Lindley. The equation is of the type for which a ...

An animated guide to probability explains how to express probability as fractions and percentages based on the ratio of the number of ways an outcome can happen and the total number of outcomes.