Answer each question with proper justification. Suppose a pharmaceutical company has developed a new medicine to cure a disease. To see whether or not this medicine is effective in curing

Answer each question with proper justification. Suppose a pharmaceutical company has developed a new medicine to cure a disease. To see whether or not this medicine is effective in curing the disease, it will have to be tested on a group of humans. Suppose there are 100 persons who have this disease; 50 of them voluntarily decide to take this medicine, and the remaining 50 decide not to take it. The researcher then compares the cure rate for the two groups of patients. Is this an example of an observational study or a designed experiment?

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