SCENARIO 11-8 An Important Factor in Selecting Database Software Is the Time

Multiple Choice

SCENARIO 11-8
An important factor in selecting database software is the time required for a user to learn how to use the system.To evaluate three potential brands (A,B and C) of database software,a company designed a test involving five different employees.To reduce variability due to differences among employees,each of the five employees is trained on each of the three different brands.The amount of time (in hours) needed to learn each of the three different brands is given below:
Below is the Excel output for the randomized block design:

-Referring to Scenario 11-9,in the context of this study,interpret the statement: "Subject visibility and test taker success interact."

A) The difference between the mean feedback time for visible and nonvisible subjects depends on the success of the test taker.
B) The difference between the mean feedback time for test takers scoring in the top 20% and bottom 20% depends on the visibility of the subject.
C) The relationship between feedback time and subject visibility depends on the success of the test taker.
D) All of the above are correct interpretations.