The difference between an observational study and an experiment is thatin an observational study only one group is studied, and in an experiment two groups are studied in an observational study, researchers do not control treatment, and in an experiment they doin an experiment cause and effect is analyzed, and in an observational study, it is not in an experiment one group is studied over a short period of time, and in an observational study, the group is studied over a longer period of time

The solution set for 5v2 – 125 = 0 is

What is the measure of one interior angle of a pentagon

Which scenarios are most effectively explored by conducting an experiment? there is more than one correct answer. select all that apply. researchers want to study the effectiveness of a particular drug for treating migraines. they want to know which dosage of the drug yields the best results with the least side effects. to ensure fair results, the researchers want to ensure that participants and dosage administrators do not know which dosage participants receive. a teacher wants to plan a class fieldtrip and quickly determine where students prefer to go for the class fieldtrip. a car mechanic wants to know which of two engine brands makes better-performing engines. he wants to test the engines in identical situations and rate their performance in a way that can be fairly measured. a chemist studies the properties of a metal compound. she wants to know how the sample size of the metal affects its ability to conduct electricity. she wants to conduct the research in a controlled environment to minimize bias. a realty company wants to know the average income of its clients. the company wants to gather data income from current clients.