4.4 Exercise 6

Minterm probabilities $p \left(0\right)$ through $p \left(15\right)$ for the opinion survey in Example 4 from "Minterms" are

$p m = \left[0 . 085 0 . 195 0 . 035 0 . 085 0 . 080 0 . 200 0 . 035 0 . 085 0 . 020 0 . 050 0 . 010 0 . 020 0 . 020 0 . 050 0 . 015 0 . 015\right]$

Show whether or not the class $\left\{A , B , C , D\right\}$ is independent.