Problem #1 (Chapter 7)

A hospital developed a design process consisting of the following steps: Plan, Design, Measure, Assess, and Improve. Below is a list of specific activities that comprise these five steps in random order. Place the activities in the most appropriate order within the correct step of the design process.

Pilot or test design

Submit proposal

Define measures to assess design performance

Implement design

Identify potential solutions to reduce out of control conditions

Develop business plan

Disseminate improvements throughout the organization

Monitor process performance

Select the best solution to improve control

Identify out of control conditions

Propose new concept

Create design to meet requirements

Identify new improvement opportunities

Monitor the new process design

Implement the best solution to improve control

Verify proposal alignment with strategic objectives

Establish design team

Identify causes of out of control conditions

Analyze causes

Identify and validate customer requirements

Identify and evaluate best practices

Problem #21. (Chapter 8)

Suppose that a refrigeration process at Coldfoods, Ltd., has a normally distributed output with a mean of 27.0 and a variance of 1.21.

a.If the specifications are 27.0 3.25, compute C_p, C_pk, and C_pm. Is the process capable and centered?

b.Suppose the mean shifts to 26.0 but the variance remains unchanged. Recompute and interpret these process capability indexes.

c.If the variance can be reduced to 40 percent of its original value, how do the process capability indices change (using the original mean of 27.0).