Suppose I have a quantum state represented by a Complex vector, arbitrarily:
$[~-0.538, 0.044 - 0.323i, 0.706, 0.044 + 0.323i~]$
With each value in that vector corresponding to some classical state:
$[~ |00\rangle, |01\rangle, |10\rangle, |11\rangle ~]$
What is the correct mathematical formula to derive a probability distribution across possible classical states that could be observed in measurement from this complex vector?
E.g. how do I find individual real values for $p(|00\rangle)$, $p(|01\rangle)$ etc. in this example?