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11 March, 15:03

When designing an experiment to study tree growth, the following four treatments are used: none, irrigation only, fertilization only, irrigation and fertilization. A row of 10 trees is used in the study and each tree is randomly assigned to one of the four treatments. How many different treatment arrangements are possible

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  1. 11 March, 15:26
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    286 different treatment arrangements

    Step-by-step explanation:

    This is a combination problem.

    We want to share 10 trees amongst 4 experimental groups.

    13C3 = 286 different treatment arrangements.
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