Question 1

Create a why-why diagram for customers leaving the store without making a purchase.

Accepted Answer

A why-why diagram for customers leaving the store without making a purchase could include the following factors:

1. Lack of attractive products: Why are the products not appealing to customers?
2. High prices: Why are the prices deterring customers from making a purchase?
3. Poor customer service: Why are customers not receiving the assistance they need to make a purchase?
4. Long wait times: Why are customers getting frustrated and leaving due to long lines or wait times?
5. Limited payment options: Why are customers unable to make a purchase due to limited payment methods accepted?
6. Unpleasant store environment: Why are customers not comfortable or satisfied with the store's atmosphere?
7. Ineffective marketing: Why are customers not aware of promotions or sales that could encourage them to make a purchase?
8. Lack of product availability: Why are customers unable to find the items they are looking for?

By identifying these root causes, the store can work towards addressing these issues and improving the overall customer experience to reduce the number of customers leaving without making a purchase.

Question 2

In the DMAIC cycle, the final step can be overlooked. What does the final stage "control" hope to accomplish?

Accepted Answer

Control refers to returning to evaluate the proposed, implemented solution to determine whether or not it worked. Control seeks to ensure permanence, ensure that the problem will not return, by making sure that the improvements made are permanently a part of the process. It seeks to control the process at a new level.

Question 3

Following their traffic study, the state lowered the speed limit on the U.S. state highway route through the small town from 45 mph to 35 mph. A follow-up study was done to determine whether or not reducing the speed limit reduced the number of accidents. Both studies were conducted for the same amount of time. Create and interpret a Pareto diagram.

Accepted Answer

$\begin{array}{lc}
\text { Carelessness/lnattention } & 4 \
\text { Visibility Obscured } & 22 \
\text { Excessive Speed } & 8 \
\text { Driving under the Influence } &12 \
\text { High traffic volume } & 2
\end{array}$ Accidents due to excessive speed was significantly lowered from 37 to 8 incidences. This verifies that the changes made were influential in reducing the number of accidents. The next area to attack is Visibility.

Question 4

A U.S. state highway route through a small town has had an increase in traffic volume, with a corresponding increase in accidents in recent years. The city manage has decided to do a traffic study to support the reduction of the speed limit. The study will cost approximately $2000. Upon completion, the study will be turned over to the state's department of transportation for consideration in deciding on the appropriate speed limit. The study investigated recent accidents with the following results. Create and interpret a Pareto diagram with the following information.

Accepted Answer

The answer of A U.S. state highway route through a...

Question 5

What does using a structured problem-solving process, like Six Sigma's DMAIC, do for us?

Accepted Answer

The answer of What does using a structured problem-solving process,...

Question 6

Create a why-why diagram for customers sending meals back to the kitchen of a restaurant.

Accepted Answer

The answer of Create a why-why diagram for customers sending...

Question 7

If you were the project manager responsible for solving a problem, based on Six Sigma's DMAIC cycle, describe the steps you would take to plan a problem investigation.

Accepted Answer

The answer of If you were the project manager responsible...

Question 8

Create a cause and effect diagram for the problem: People wait too long for food during the noon hour at a local fast food restaurant. Complete the diagram by brainstorming potential corrective actions.

Accepted Answer

The answer of Create a cause and effect diagram for...

Question 9

Create a force-field diagram concerning the following issue: Students should each purchase a university specified computer their first year.

Accepted Answer

The answer of Create a force-field diagram concerning the following...

Question 10

Create a process flow chart for going to the movies. Begin with deciding when to go.

Accepted Answer

The answer of Create a process flow chart for going...

Exam 8: Problem Solving Using Design, Measure, Analyze, Improve, Control