CSSBB Online Practice Questions and Answers

A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt's effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. The Alternative Hypothesis in the above example is?

A. The Standard Deviation is equal to $300

B. The Mean is less than $4,320

C. The Mean is equal to $4,060

D. The Mean is less than $4,200

E. The Mean is greater than $ 4,200

If in an experiment all possible variable pairs sum to zero the design is Orthogonal.

A. True

B. False

Which statement(s) are correct about the Regression shown here? (Note: There are 2 correct answers).

A. The dependent variable is the outside temperature

B. The relationship between outside temperature and number of customers per hour is a Linear Regression

C. The dashed lines indicate with 95% confidence where all of the process data should fall between

D. The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line

E. The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C

The Central Limit Theorem says that as the sample size becomes large the sample Mean distribution will form a Normal Distribution, ____________________.

A. If the Measurement System is properly calibrated

B. When the data is collected accurately

C. If the shape is evenly spread

D. No matter what the shape of the population distribution of individuals

For a Normal Distribution as samples size increases the Range in Mean and Standard Deviation decrease relative to the Mean and Standard Deviation of the population.

A. True

B. False

A valid mathematical Regression represents all of the characteristics shown except ___________________________.

A. The residuals when plotted follow a Normal Distribution

B. The sum of the residuals is zero

C. All of the standardized residuals will be within ? Standard Deviations

D. Most standardized residuals are within ? Standard Deviations

If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement is incorrect?

A. The Experimental Design is half-fractional

B. The Main Effects are confounded with only 4-way interactions

C. The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions

D. The experiment has 8 experimental runs with the first factor at the high level

Handling of warranty returns, process improvement team meetings and rework to meet customer expectations are all examples of business costs that are classified as ___________ .

A. Nuisance

B. Non-value Add

C. Necessary

D. Unavoidable

A ___________ is used primarily to track the stability of the average value of a metric of interest.

A. NP Chart

B. Xbar-R Chart

C. I-MR Chart

D. C Chart

Two of the key deliverables for the Measure Phase are a robust description of the process and its flow and an assessment of the Measurement System.

A. True

B. False