If we expect $99\mathrm{.}7\%$ of points within a normal distribution to fall within

$+-3$ standard deviations of the mean. Therefore, we expect $99\mathrm{.}7\%$ of

process measurements to fall within

Group of answer choices

A within $x+-3{}^{?}$

B within $x^{?}=+-2{}^{?}$

C within $x^{\text{'}\text{'}}+-1{}^{?}$

D None of the above

B

c