e$)$ If the true diameter mean should be $155$ mm and you want this as your center$($nominal$)$ line, what are the new UCL Subscript x overbar and LCL Subscript x overbar$?$

Upper Control Limit $($UCL Subscript x overbar$)=$

$$

$156\mathrm{.}39$ mm $($round your response to two decimal$$ places$).$

Part $9$

Lower Control Limit $($LCL Subscript x overbar$)=$

$$

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