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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 11-8,the null hypothesis for the randomized block F test for the difference in the means is
Stimulus Variable
A Stimulus Variable is a factor in an experiment that can be changed or manipulated to observe its effects on the outcome.
Control Variable
A variable that is kept constant or unaltered in an experiment to ensure that the effects observed are due to the independent variable.
Questionnaire
A research instrument composed of a series of questions and other prompts for the purpose of gathering information from respondents.
Psychological Test
An objective and standardized measure of a sample of behavior used to assess psychological constructs such as cognitive abilities and emotional functioning.
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