Researchers at a university want to know if higher levels of nitrogen in fertilizer will increase the production of tomatoes per plant. Twenty plants are given normal levels of nitrogen and twenty other plants are given ten percent higher levels throughout the growing season. The plants receive the same levels of sunlight, water and are planted in the same soil on one farm. At the end of the experiment the average number of tomatoes produced is the same for each group. The scientists repeat the experiment on two additional farms further south that season. The researchers conclude that increasing nitrogen levels by 10% in tomatoes is not beneficial.

Would this be a well designed reliable experiment? Support your decision with at least three reasons.

Question

Sylvia Walker

Physics

17 May, 17:37

Researchers at a university want to know if higher levels of nitrogen in fertilizer will increase the production of tomatoes per plant. Twenty plants are given normal levels of nitrogen and twenty other plants are given ten percent higher levels throughout the growing season. The plants receive the same levels of sunlight, water and are planted in the same soil on one farm. At the end of the experiment the average number of tomatoes produced is the same for each group. The scientists repeat the experiment on two additional farms further south that season. The researchers conclude that increasing nitrogen levels by 10% in tomatoes is not beneficial.

Would this be a well designed reliable experiment? Support your decision with at least three reasons.

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Answers (1)

Know the Answer?

Lillian Little · Answer 1

Yes

Explanation:

It would be because:

1. They tested Twenty Plants therefor they tested the subject multiple times.

2. They were all in an controlled environment in an farm.

3. It was repeated by 2 additional farms.

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