Six Sigma programs in manufacturing seek to:

reduce defects to no more than $11$ defects per million

to have a process that is $99\mathrm{.}9997$ percent accuracy

reduce defects to no more than $3\mathrm{.}4$ defects per million iterations

$2$ and $3$

$1$ and $2$

entails creating a total new culture

$6$

$2$

$4$

$3$

$5$

$1$