# Expected Value

## Homework Statement

Suppose that a point is chosen at random on a stick that has length 15 inches, and that the stick is broken into two pieces at that point. Find the expected value of the lengths of the two pieces.

## Homework Equations

E(x)=$$\sumf(x)xdx$$ from -infinity to +infinity (continuous case)
E(x)=$$\sumf(x)x$$ for all x (discrete case)

## The Attempt at a Solution

X1+X2=15

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lanedance
Homework Helper
any ideas?

try starting from a single uniform random variable X, with uniform distribution, representing break distance from one end....

Last edited:
jbunniii