Question

According to a study of 200 samples of ground meats, the probability that one of the samples was contaminated by salmonella was .35. The probability that a salmonella-contaminated sample was contaminated by a strain resistant to at least one antibiotic was .64, and the probability that a salmonella-contaminated sample was contaminated by a strain resistant to at least three antibiotics was .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.

(Round your answer to three decimal places.)

Answer 1

I think according the statement the probability of the ground will be .189

Explanation:

sample by almonella was .35

three antibiotics was .54

the probability of the antibiotic resistant strain was = .35 * .54=.189