Multiple Choice
You are evaluating a program to reduce employee turnover in XYZ Company. You randomly assigned the employees in the Eastville plant to be the experimental group and the employees in the Centerville plant, located 50 miles from Eastville, to be the control group. During the course of your research, another company in Centerville expands its workforce and offers a higher pay rate than XYZ. This event has created the possibility of a(n) ________ confound for your study.
A) local history
B) treatment diffusion
C) competition
D) instrumentation change
Correct Answer:
Verified
Correct Answer:
Verified
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