Refer to Table S$6\mathrm{.}1-$ Factors for Computing Control Chart Limits $(3$ sigma$)$ for this problem.

each day, the mean and the range of this diameter have been as follows:

a$)$ What is the value of $\frac{?}{\text{b}\text{a}\text{r}}(\stackrel{}{x})?$

$\stackrel{}{x}=$

$mm($round your response to two decimal places$).$

b$)$ What is the value of $\frac{?}{\text{b}\text{a}\text{r}}(R)?$

$\frac{?}{\text{b}\text{a}\text{r}}(R)=4\mathrm{.}48mm($round your response to two decimal places$).$

c$)$ What are the $UC{L}_{\stackrel{}{x}}$ and $LC{L}_{\stackrel{}{x}}$ using $3-$sigma?

Upper Control Limit $(UC{L}_{\stackrel{}{x}})=-,mm($round your response to two decimal places$).$ also include the lower please!