A company is trying to optimize their product manufacturing process, so they conduct a VSM. They find that the Inspection station seems to be a bottleneck. They sample the Inspection station’s cycle times each day for a week. Using the chart and the data, select the closest estimate of the Operational Equipment Effectiveness (OEE) for the Inspection Station.
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If an Inspection Station has a historical reject rate of 5%, what is the chance they will see 5 rejects out of 100 units inspected?

If an Inspection Station has a historical reject rate of 7.5%, what is the chance they will see just 1 reject out of 60 units inspected?

The average time for a student to complete the Green Belt exam is 3 hours and 20 minutes with a standard deviation of 20 minutes. The times are normally distributed. Among a recent group of test takers, one student completed the exam in 1 hour and 30 minutes, and another took 4 hours and 10 minutes. What is the probability that a student will take less than 1 hour and 30 minutes or more than or 4 hours and 10 minutes to complete the exam?

The Accounts Receivable department tracks how long it takes to receive payment from their largest client. The average time is 35 days with a standard deviation of 5 days. The times are normally distributed. What is the probability of receiving a payment within 25 - 28 days?

A plastic molding station is trying to reduce scrap. They begin capturing and measuring the amount of scrap generated for each build. They find that the average amount of scrap per build is 17.6 ounces with a standard deviation of 5.3 ounces. The 25% of builds with the least amount of scrap fall below what value?

A training organization has all new employees take an exam after attending a series of classes intended to teach them how to use the internal document control system. The average score on the exam is 81% with a standard deviation of 6.7%. The scores are normally distributed. What is the score below which the bottom 5% of results fall?

A hard drive manufacturer finds that their average time to failure is 4000 hours. They want to warranty that their drives will last at least 1000 hours. What is the chance that a drive will fail within 1000 hours?

A customer support line determines that customers wait an average of 7.75 minutes before getting connected to a support representative. What is the probability of a customer getting connected within 3 - 4 minutes?

A factory tracks accidents and finds that they experience and average of 2 accidents per month. What is the probability that they will suffer 5 or more accidents in a single month?

A manufacturing engineer records that a conveyer belt feeding an assembly cell suffers a stoppage on average 3 times per shift. What is the probability that it will go an entire shift without a single stoppage?

Select the 8 classic categories of waste in Lean thinking.

The amount of time someone spends actually working on a task, not including interruptions is called:

The total amount of time required to complete a process step, including interruptions and other delays is called:

The amount of time that elapses when a machine is stopped on purpose to set it up for a different task is called:

The calculation for takt time is which of the following?

Kanban is a system that allows us to control...

When creating a current state value stream map, we are trying to draw the process in as much granular detail as possible.

Which of the following indicate opportunities for improvement on a current state value stream map? (select all that apply)

When building our future state VSM, we must look at the current state and determine if the steps are:

When conducting a current state VSM, it is recommended that you have the team do what before starting the mapping session?

When conducting a 5-why analysis, it is important to check our work by starting at answer to the final "why", and work backwards by saying...

When building a fishbone diagram, common categories for the "bones" are (select all that apply):

A company has newly hired sales associates watch a series of five training videos that are each one hour long before starting in their new positions. A group of 20 employees were tracked and the number of minutes of each video they watched was recorded. The sales manager then calculated how many workdays elapsed before the new associates made their first successful sale. Analyze this data and answer the question below:

Using an alpha of 0.05 as your threshold for significance, what is the prediction equation for Days to first sale?

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A company has newly hired sales associates watch a series of five training videos that are each one hour long before starting in their new positions. A group of 20 employees were tracked and the number of minutes of each video they watched was recorded. The sales manager then calculated how many workdays elapsed before the new associates made their first successful sale. Analyze this data and answer the question below:

In order minimize Days to first sale, how many minutes of Video 4 (factor D) should the sales associates watch?

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A company has newly hired sales associates watch a series of five training videos that are each one hour long before starting in their new positions. A group of 20 employees were tracked and the number of minutes of each video they watched was recorded. The sales manager then calculated how many workdays elapsed before the new associates made their first successful sale. Analyze this data and answer the question below:

Which, if any, observations are influencing the model?

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A company has newly hired sales associates watch a series of five training videos that are each one hour long before starting in their new positions. A group of 20 employees were tracked and the number of minutes of each video they watched was recorded. The sales manager then calculated how many workdays elapsed before the new associates made their first successful sale. Analyze this data and answer the question below:

What recommendations do you have to streamline the training program? (select all that apply)

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An aviation startup company is developing an electric plane for use on short commuter routes. They have successfully flown their plane in tests but now want to make it customer friendly. They will fly a set route multiple times with different aircraft “settings” and then survey the passengers about their satisfaction with the comfort of the flight. The following are the three factors they will experiment with. Due to power restrictions, they can’t maximize all settings at the same time.

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Analyze this data and answer the question below:

What DOE design is recommended for this experiment?

An aviation startup company is developing an electric plane for use on short commuter routes. They have successfully flown their plane in tests but now want to make it customer friendly. They will fly a set route multiple times with different aircraft “settings” and then survey the passengers about their satisfaction with the comfort of the flight. The following are the three factors they will experiment with. Due to power restrictions, they can’t maximize all settings at the same time.

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Analyze this data and answer the question below:

Using an alpha of 0.10 as your threshold for significance, what factors are significant in the Y-hat model? (select all that apply)

An aviation startup company is developing an electric plane for use on short commuter routes. They have successfully flown their plane in tests but now want to make it customer friendly. They will fly a set route multiple times with different aircraft “settings” and then survey the passengers about their satisfaction with the comfort of the flight. The following are the three factors they will experiment with. Due to power restrictions, they can’t maximize all settings at the same time.

(click here for larger image)

Analyze this data and answer the question below:

Using an alpha of 0.10 as your threshold for significance, what factors are significant in the S-hat model? (select all that apply)

An aviation startup company is developing an electric plane for use on short commuter routes. They have successfully flown their plane in tests but now want to make it customer friendly. They will fly a set route multiple times with different aircraft “settings” and then survey the passengers about their satisfaction with the comfort of the flight. The following are the three factors they will experiment with. Due to power restrictions, they can’t maximize all settings at the same time.

(click here for larger image)

Analyze this data and answer the question below:

Based on the Y-hat marginal means plot, how does the average Customer Satisfaction score (the output) behave as the cabin temperature moves from the low setting to the high setting?

An aviation startup company is developing an electric plane for use on short commuter routes. They have successfully flown their plane in tests but now want to make it customer friendly. They will fly a set route multiple times with different aircraft “settings” and then survey the passengers about their satisfaction with the comfort of the flight. The following are the three factors they will experiment with. Due to power restrictions, they can’t maximize all settings at the same time.

(click here for larger image)

Analyze this data and answer the question below:

Based on the S-hat marginal means plot, how does standard deviation of Customer Satisfaction (the output) behave as the cabin lighting moves from the low setting to the high setting?

An aviation startup company is developing an electric plane for use on short commuter routes. They have successfully flown their plane in tests but now want to make it customer friendly. They will fly a set route multiple times with different aircraft “settings” and then survey the passengers about their satisfaction with the comfort of the flight. The following are the three factors they will experiment with. Due to power restrictions, they can’t maximize all settings at the same time.

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Analyze this data and answer the question below:

What are the optimized settings that equally balance maximizing the average Customer Satisfaction score and minimizing its standard deviation?

A manufacturer of specialized textiles is trying to maximize the strength of the bond between two materials that they join with a proprietary adhesive. There are 9 factors they are experimenting with, as shown below:

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Analyze this data and answer the question below:

Which factors are significant in Y-hat? (select all that apply)

A manufacturer of specialized textiles is trying to maximize the strength of the bond between two materials that they join with a proprietary adhesive. There are 9 factors they are experimenting with, as shown below:

(click here for larger image)

Analyze this data and answer the question below:

Which factors are significant in S-hat? (select all that apply)

A manufacturer of specialized textiles is trying to maximize the strength of the bond between two materials that they join with a proprietary adhesive. There are 9 factors they are experimenting with, as shown below:

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Analyze this data and answer the question below:

What immediate actions would you take to improve the process? (select all that apply)

A manufacturer uses heat-sealed polystyrene to wrap parts for shipment to customers. They hold the seal time constant at 2 seconds, but conduct a DOE to better understand how the other two input variables: pressure (35 - 45 psi) and temperature (90°C -105°C) affect seal strength (measured in psi).

Analyze this data and answer the question below (use an alpha of 0.05 as your threshold of significance):

Which statement best describes the interaction in the Y-hat model?

A manufacturer uses heat-sealed polystyrene to wrap parts for shipment to customers. They hold the seal time constant at 2 seconds, but conduct a DOE to better understand how the other two input variables: pressure (35 - 45 psi) and temperature (90°C -105°C) affect seal strength (measured in psi).

Analyze this data and answer the question below (use an alpha of 0.05 as your threshold of significance):

Which statement best describes the interaction in the S-hat model?

A manufacturer uses heat-sealed polystyrene to wrap parts for shipment to customers. They hold the seal time constant at 2 seconds, but conduct a DOE to better understand how the other two input variables: pressure (35 - 45 psi) and temperature (90°C -105°C) affect seal strength (measured in psi).

Analyze this data and answer the question below (use an alpha of 0.05 as your threshold of significance):

Create a contour plot for the Y-hat model. The manufacturer would like achieve a seal strength above 65 psi, but would also prefer to limit the input pressure to no more than 42 psi. Based on what you see, is it possible to achieve both goals?

A retail store wants to see if the amount of the average customer sale is affected by the following variables: Time of day, Customer traffic, Day of week. They gather historical data from the previous five weeks and set up a custom design.

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Analyze this data and answer the question below:

Using an alpha of 0.05 as your threshold of significance and following our rule of thumb for tolerances, optimize your model. Which factor(s) are significant? (check all that apply)

A retail store wants to see if the amount of the average customer sale is affected by the following variables: Time of day, Customer traffic, Day of week. They gather historical data from the previous five weeks and set up a custom design.

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Analyze this data and answer the question below:

Using an alpha of 0.05 as your threshold of significance and following our rule of thumb for tolerances, optimize your model. Using the multiple response optimizer, which day is predicted to have the highest sales?

A retail store wants to see if the amount of the average customer sale is affected by the following variables: Time of day, Customer traffic, Day of week. They gather historical data from the previous five weeks and set up a custom design.

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Analyze this data and answer the question below:

Using an alpha of 0.05 as your threshold of significance and following our rule of thumb for tolerances, optimize your model and generate a residual sheet. Which, if any, residuals concern you?

A logistics engineer is setting up a new machine. There are 5 configurable settings and she would like to conduct a DOE to build a linear model but is concerned about how many samples she will need to gather. What design would you recommend?

What is the main concern with "one-factor-at-a-time" experimentation?

If you are planning an experiment on a system but you're not sure if it behaves in a linear or non-linear way, which design is best?

A manufacturer needs to measure the width of an assembly. The target width is 20cm, ±0.5. A series of sample measurements was taken and can be found here. What is the probable error of the measurement system?

A manufacturer needs to measure the width of an assembly. The target width is 20cm, ±0.5. A series of sample measurements was taken and can be found here.

Based on your calculation of probable error, what concern, if any, do you have about the measurement system?

A necessary condition for successful change efforts is:

The main question in people's minds when they become aware of a change is often:

A communications plan for a change effort must consider the following (select all that apply)?