Which data design? Each situation described in Exercises 18.1 to 18.4 requires i

Question

Which data design? Each situation described in Exercises 18.1 to 18.4 requires inference about a mean or means. Identify each as involving (1) a single sample, (2) matched pairs, or (3) two independent samples. The procedures ofChapter 17 apply to designs (1) and (2). We are about to learn procedures for (3).

Agricultural pests can be controlled to some extent either by using pesticides to kill them or by introducing a large number of sterilized males to diminish the species’ reproductive potential. Ten large corn fields are treated with pesticides, and 10 have sterilized males introduced. Corn yield at harvest time is then compared for the two treatments.

Explanation / Answer

There will be two independent samples:

First sample: corn yield of corn fields are treated with pesticides

Second sample: corn yield of corn fields have sterilized males introduced

So two independent samples will be used.

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