A randomized block design will be used in an experiment to compare two lotions that protect people from getting sunburned. Which of the following should guide the formation of the blocks? 9. (A) Participants in the same block should receive the same lotion. (B) Participants should be randomly assigned to the blocks. (C) Participants should be kept blind as to which block they are in. (D) Participants within each block should be as similar as possible with respect to how casily they get sunburned. (E) Participants within each block should be as different as possible with respect to how ecasily they get sunburned sunburned

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15-04-2020
Mathematics

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A randomized block design will be used in an experiment to compare two lotions that protect people from getting sunburned. Which of the following should guide the formation of the blocks? 9. (A) Participants in the same block should receive the same lotion. (B) Participants should be randomly assigned to the blocks. (C) Participants should be kept blind as to which block they are in. (D) Participants within each block should be as similar as possible with respect to how casily they get sunburned. (E) Participants within each block should be as different as possible with respect to how ecasily they get sunburned sunburned

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Lanuel Lanuel · Answer 1 · 2020-04-18T04:12:30+02:00

Lanuel Lanuel

18-04-2020

Answer:

(D) Participants within each block should be as similar as possible with respect to how easily they get sunburned.

Step-by-step explanation:

In a randomized block design used in an experiment to compare two lotions that protect people from getting sunburned.

The formation of the blocks should be guided by ensuring participants within each block are as similar as possible with respect to how easily they get sunburned.

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AFOKE88 AFOKE88 · Answer 2 · 2021-11-19T16:54:33+01:00

What should guide the formation of blocks in this question is;

Option D; Participants within each block should be as similar as possible with respect to how casily they get sunburned

A randomized block design is an experimental design in which the experimental units are categorized in groups which are called blocks.

Now, in randomized block design, treatments are randomly assigned to the experimental units inside each block.

In this case, we want to compare two lotions that protect people from getting sunburned. This means when we group the participants, they should be very similar in relation to how easily they get sunburned. This will help because then when treatments are assigned, a true representation will be gotten.

In conclusion, option D represents the best guide in the formation of the blocks.

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