![subject](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 24.02.2020 21:01 AJRL2005
Determine whether the study described is a randomized experiment or an observational study. A math department chair wants to determine the effectiveness of online homework systems. She selects four college algebra classes where each one is set up to use a different online homework system. Students have already enrolled in the classes. She administers a common pretest and final exam to measure the effectiveness.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Social Studies
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.06.2019 16:00
Now , use your research to decide what business is the best choice for this community. explain your choice in two to three sentences, using factual evidence to support your claim.
Answers: 3
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.06.2019 06:30
The most heavily populated areas of africa are found
Answers: 1
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.06.2019 08:00
What primary role of regulatory agencies is the article excerpt referring to check all that apply
Answers: 1
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.06.2019 14:40
Between 1860 and the gave the federal government some control over peopleβs lives.
Answers: 1
You know the right answer?
Determine whether the study described is a randomized experiment or an observational study. A math d...
Questions
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 06:09
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 06:09
![question](/tpl/images/cats/himiya.png)
Chemistry, 06.05.2020 06:09
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 06:09
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/himiya.png)