According to a University of Maryland Study of 200 Samples

question 112

Multiple Choice

According to a University of Maryland study of 200 samples of ground meats, the probability that one of the samples was contaminated by salmonella was 0.20. The probability that a salmonella-contaminated sample was contaminated by a strain resistant to at least one antibiotic was 0.86, and the probability that a salmonella-contaminated sample was contaminated by a strain resistant to at least three antibiotics was 0.54. Find the probability that a ground meat sample that was contaminated by an antibiotic-resistant strain was contaminated by a strain resistant to at least three antibiotics. Please round the answer to the nearest thousandth. ​

• A)0.528
• B) 0.628
• C) 0.627
• D) 0.638
• E) 0.630

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