In the hypothetical example posed by the authors, they state "The company could randomly assign its employees to receive either the old enrollment packet or the new one that includes the peer contribution information, and then statistically compare the two groups of employees to see which saved more." What is the purpose of random assignment in this example?

to prevent unintended differences between the groups at the start of the start of the study.

Explanation:

Based on the information provided within the question it can be said that the main reason for this is mainly to prevent unintended differences between the groups at the start of the start of the study. Otherwise they may unintentionally cause differences in the groups due to their beliefs, ideas, or experiences when assigning the employees.

answer is a

explanation:

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