For her injection molding project a ______ Belt needed to track the percentage of defectives of a particular sample set so she used a to display the data?

1. A. Individual Chart
2. B. C Chart
3. C. Xbar Chart
4. D. P Chart

Correct Answer: D

A(n) ______ is best used to compare a Machine 1 average quality characteristic to the same quality characteristic of Machine 2.

1. A. F test
2. B. 1-Sample t-test
3. C. 2-Sample t-test
4. D. ANOVA test

Correct Answer: C

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

1. A. If the Measurement System is properly calibrated
2. B. When the data is collected accurately
3. C. If the shape is evenly spread
4. D. No matter what the shape of the population distribution of individuals

Correct Answer: D

A natural logarithmic base is not required for which of these distributions for probability calculations?

1. A. Weibull
2. B. Binomial
3. C. Poisson
4. D. Normal

Correct Answer: D

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 $2,800 in order to stay within budget. Using a sample of 55 first article components, a Mean of the new product upgrade price of $2,240 and a Standard Deviation of $120 was estimated. Based on the data provided, the Z value for the data assuming a Normal Distribution is?

1. A. 2.33
2. B. 4.67
3. C. 6.48
4. D. 8.28

Correct Answer: B