Sample Means and Ranges Were Obtained for Five Samples of 10

question 14

Multiple Choice

Sample means and ranges were obtained for five samples of 10 units per sample from a production process. Assume the process was considered to be in control during the period these samples were collected. The results are as follows:

LCL for the three sigma X chart for the process is approximately (for a sample size of 10, A₂ = 0.31) :

• A)10.12.
• B)10.05.
• C)10.94.
• D)9.44.
• E)9.75.

---

Definitions:

Laggards

Consumers who like to avoid change and rely on traditional products until they are no longer available.

Trialability

The extent to which a product can be tested or used on a limited basis before making a purchase decision.

Diffusion

is the process through which an innovation is communicated through certain channels over time among the members of a social system, typically illustrating how new products, ideas, or practices spread within a population.

Compatibility

The capability of two or more systems to operate in unison without conflict or error.