'Experimental in science Essay\r'

' sample wiz:\r\nA researcher wanted to test the effect of caffeine on sleep. Fifty students volunteered to participate in the study and signed up for matchless of dickens nights. Thirty-three students participated on Tuesday night. They to each one were given twain cups of regular coffee to drink one arcminute before going to sleep. Seventeen students participated on Wednesday night. They each were given two cups of decaffeinated coffee to drink one hour before going to sleep. Each student was monitored with an EEG (a test that looks at brain function) to bring down exactly when they fell asleep. Students in the caffeine grouping took significantly longer to fall(a) asleep. The researcher reason that caffeine interferes with the ability to fall asleep.\r\n1. What was the free-lance uncertain for taste One?\r\n2. What was the dependent protean for Experiment One?\r\n3. What components of the experiment were set up correctly?\r\n4. How could Experiment One be amend?\r\ nExperiment Two:\r\nA researcher wanted to agree if a new anti- fretfulness do medicines decreased anxiousness levels. Three hundred patients were given the new medicine and three hundred patients were given a placebo (also know as a â€Å"sugar pill” that does non contain any medicine). All of the patients were told they were receiving the new drug and were monitored for six months. At the end of the six months, all of the patient information was analyzed and the researcher cogitate that because the patients given the placebo indicated the same reduction in anxiety as the patients given the new drug, the new drug was ineffective in decreasing anxiety levels.\r\n5. What was the independent variable for Experiment Two?\r\n6. What was the dependent variable for Experiment Two?\r\n7. What components of the experiment were set up properly?\r\n8. How could Experiment Two be improved?\r\n9. Describe how a variable was NOT controlled in one of the two experiments. How might th is have squeeze the results?\r\n'