3 years ago

Is this a valid experimental design? A. B. C. D.

2 answers:

6 0

Answer: d

Step-by-step explanation: None needed

vagabundo [1.1K]3 years ago

3 0

Answer:

i would say 3

Step-by-step explanation: why? because most likely they are testing 2 different types and if one gets a unfair advantage that can ruin everything

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