Chapter 6.S, Problem 7P

a)

Summary Introduction

To determine: The value of $\overline{\overline{x}}$.

Introduction: Control charts used to determine whether the process is under control or not. Attributes and variables are the factors under the control charts.

b)

Summary Introduction

To determine: The value of $\overline{R}$.

Introduction: Control charts used to determine whether the process is under control or not. Attributes and variables are the factors under the control charts.

c)

Summary Introduction

To plot: The UCL and LCL for $\overline{x}$.

Introduction: Control charts used to determine whether the process is under control or not. Attributes and variables are the factors under the control charts.

d)

Summary Introduction

To plot: The UCL and LCL for $\overline{R}$.

Introduction: Control charts used to determine whether the process is under control or not. Attributes and variables are the factors under the control charts.

e)

Summary Introduction

To determine: The UCL and LCL for $\overline{x}$ if the true diameter mean is 155mm.

Introduction: Control charts used to determine whether the process is under control or not. Attributes and variables are the factors under the control charts.