Which of these is a key feature of an experimental study? a. the treatment in the experiment should be simple enough for each individual in the experimental group to understand. b. the treatment in the experiment must vary for each individual in the experimental group. c. the treatment in the experiment must be applied to each of the individuals in the experimental group. d. the treatment in the experiment should be short so that each individual is tested quickly.

I believe it is "E"

Step-by-step explanation:

E-series can eat my memes

Kill me please I'm Swedish ree

The key feature in the experimental study is C. The treatment in the experiment must be applied to each of the individuals in the experimental group. This is because it is made sure that the variables and conditions in different correspondents are applied so that actual results may be concluded.

Step-by-step explanation:

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step-by-step explanation:

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company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b