A store that sells health foods, has 16 different types of flour. Four of the flours are white and the rest are brown. Assume sampling with replacement. 
Definitions:
Propensity Score Matching
A method of pairing individuals for assignment to a treatment and control condition based upon a combination of scores on participant variables.
Multiple Variables
Multiple variables refer to the presence or use of more than one variable in an experiment or analysis to understand complex relationships or effects.
Random Assignment
A method used in experiments to allocate subjects randomly to experimental and control groups, ensuring each participant has an equal chance of any condition.
Technique
A systematic procedure, method, or skill applied in a particular task to achieve a desired result efficiently.
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