Medical researchers wish to test a new antibiotic, labeled A…
Medical researchers wish to test a new antibiotic, labeled A. They will compare it to the old antibiotic labeled B to see whether they are different. The researchers prepare 20 agar plates, which are sterilized and seeded with E. coli. 10 plates are randomly assigned to have antibiotic A applied, and the remaining 10 get antibiotic B. After 5 days, the percentage of E. coli on each plate (out of total bacteria on that plate) is measured. The parameter of interest in this situation is:
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