Subjects were randomly assigned to two groups, and one group was given an herb and the other

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Subjects were randomly assigned to two groups, and one group was given an herb and the other group a placebo. After 6 months, the numbers of respiratory tract infections each group had were compared.

Identify each study as being either observational or experimental.

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Elementary Statistics A Step By Step Approach

ISBN: 9781259755330

10th Edition

Authors: Allan G. Bluman

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Question Posted: Jul 28, 2018 01:01 PM

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Subjects were randomly assigned to two groups, and one group was given an herb and the other

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Elementary Statistics A Step By Step Approach

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