In a randomized controlled experiment A. there is a control group and a treatment group. B. you control for random answers C. the control group receives treatment on even days only. D. you control for the effect that random numbers are not truly randomly generated

A. there is a control group and a treatment group

Explanation:

In a randomized controlled experiment  there is a control group and a treatment group. Randomized controlled experiments are are highly structured experiments in which manager obtains the data to work smarter based on the resources available. These are use din business environment and not time consuming or costly ; all you need to do is to have the data available of the business segment you want to evaluate. Randomization makes one feels more confident that any result he get is actually caused by the independent variable of interest.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail

answer; scientific;