IASSC IASSC Certifications ICBB Questions & Answers

• Question 371:

  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 $3,600 in order to stay within budget. Using a sample of 42 first article components, a Mean of the new product upgrade price of $3,200 and a Standard Deviation of $180 was estimated. Based on the data provided, the Z value for the data assuming a Normal Distribution is?

  A. 1.11

  B. 2.22

  C. 4.30

  D. 5.42

  Correct Answer: B

• Question 372:

  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.

  Correct Answer: E

• Question 373:

  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. Select the answer that best states the Practical Problem.

  A. If the average cost per component is $4,200 or less, then the purchase manager will introduce the new product upgrade with new components.

  B. If the average cost per component is greater than $4,200, then the purchase manager will introduce the new product upgrade with new components.

  C. Only if the average cost per product upgrade is $4,060, will the purchase manager introduce new product upgrades with new components.

  D. If the average cost per new product upgrade is less than $180, then the purchase manager will introduce the new product upgrade with new components.

  Correct Answer: C

• Question 374:

  Which of these might contribute to similar distributions having Unequal Variance?

  A. Extreme tails

  B. Outliers

  C. Multiple Modes

  D. All of the above

  Correct Answer: D

• Question 375:

  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

  Correct Answer: DE

• Question 376:

  When a Belt properly analyzes the results of an experiment he must examine the Residuals in expectation of finding all of the following except _________.

  A. Some Residuals higher than others

  B. Some Residuals lower than others

  C. All Residuals within 2 Standard Deviations of the Mean

  D. Residuals will represent a Linear Regression

  Correct Answer: D

• Question 377:

  It would be more likely than not for a Belt conducting a Regression Analysis to find that the _______________________.

  A. r2 value is smaller than the absolute value of r

  B. Correlation Coefficient equals r2

  C. Coefficient of Determination is less than r2

  D. Correlation Coefficient equals r divided by 2

  Correct Answer: A

• Question 378:

  Which statement is NOT correct about the Fitted Line Plot shown here?

  

  A. The independent variable is the reactant

  B. If the reactant was 6 units, with 95 % confidence we would expect a minimum yield of 100 units

  C. With at least 95% confidence, we can expect less than 10 units of Yield when the reactant is at a value of 1

  D. A reactant value between 2 and 4 units yields around 20 to 40

  E. When the reactant increases, the expected yield would increase

  Correct Answer: D

• Question 379:

  When doing Hypothesis Testing on Non-normal data Belts will use a ________________ to compare more than two sample proportions to each other.

  A. Z score Table

  B. Sakami Table

  C. Mean-to-Mode Analysis

  D. Contingency Table

  Correct Answer: C

• Question 380:

  A valid Multiple Linear Regression (MLR) is characterized by all of these except _______________________.

  A. It is an assumption that the X's (inputs) are not correlated to each other

  B. The X's (inputs) are assumed to be independent of each other

  C. MLR is conducted based on a deliberate form of experimentation

  D. The Residuals from MLR analysis have to be Normally Distributed

  Correct Answer: C