In Exercise identify which of these designs is most appropriate for the given experiment: completely randomized design, randomized block design, or matched pairs design.HIV Vaccine The HIV Trials Network is conducting a study to test the effectiveness of two different experimental HIV vaccines. Subjects will consist of 80 pairs of twins. For each pair of twins, one of the subjects will be treated with the DNA vaccine and the other twin will be treated with the adenoviral vector vaccine.

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Asked Dec 28, 2019
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In Exercise identify which of these designs is most appropriate for the given experiment: completely randomized design, randomized block design, or matched pairs design.

HIV Vaccine The HIV Trials Network is conducting a study to test the effectiveness of two different experimental HIV vaccines. Subjects will consist of 80 pairs of twins. For each pair of twins, one of the subjects will be treated with the DNA vaccine and the other twin will be treated with the adenoviral vector vaccine.

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Expert Answer

Step 1

Completely randomized experimental design:

If the experiment is designed by randomly selecting the subjects and assigning them to different groups of the treatments then the design is termed as completely randomized experimental design.

Randomized block design:

If the experiment is designed by first forming the block or groups of the subjects that share same characteristics or properties, and then if the treatments are assigned to the subjects ...

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