is

$$

enter your response here. $($Enter your response rounded to three decimal$$ places.$)$

Part $4$

Upper Control Limit $($UCL Subscript Upper X overbar$)$equals

$$

enter your response here. $($Enter your response rounded to three decimal$$ places.$)$

Part $5$

Lower Control Limit $($LCL Subscript Upper X overbar$)$equals

$$

enter your response here. $($Enter your response rounded to three decimal$$ places.$)$