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carlisle is testing different types of planting soil to determine which type is most effective in growing blueberry bushes. he purchases 2 different brands of planting soil from a local store. carlisle applies brand a to an area of the yard that receives full sunlight and brand b to another area of the yard that is in partial shade. he waters both areas daily. at the end of the study, carlisle concludes brand a is more effective in growing blueberry bushes. why is his conclusion not valid?

Respuesta :

texaschic101
Because they were not tested in the same conditions.

Answer:

Step-by-step explanation:

Given that for testing different types of planting soil, he purchases 2 different brands of planting soil from a local store. carlisle applies brand a to an area of the yard that receives full sunlight and brand b to another area of the yard that is in partial shade.

This test is not valid to give a reliable conclusion because

1) just one each for one type is not sufficient to test. Sample size should be sufficiently large

2) Homogeneous conditions should be maintained for comparison.  Here one plant in sunlight and other in partial shade. So comparison may not be correct.

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