A certain herb is said to be effective in treating depression. A group of researchers
randomly assigns 200 patients with major
depression to either take the herb or a
dummy pill that looked and tasted the same.
This is an example of
A An Obsenational Study
B. Contro ed Experiment
C. A survey

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?