Which of the following must happen in a study to allow us to determine cause and effect?
Question:
Which of the following must happen in a study to allow us to determine cause and effect?
A. Taking a random sample from a population
B. Randomly assigning the observational units to different treatment groups
C. Simulation-based inference techniques
D. Theory-based inference techniques
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B Randomly ass...View the full answer
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Related Book For 
Introduction To Statistical Investigations
ISBN: 9781118172148
1st Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy
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