$1-$ Judgment on "Quality" is subjective in general; $*$

True

False

$2-$ What is the minimum acceptable rate of $1$ sigma of quality production? $*$

a$)95\mathrm{.}4$

b$)99\mathrm{.}7$

c$)99\mathrm{.}9$

d$)68\mathrm{.}4$