This Question: 3 pts 6 of 38 (1 complete) This Test: 82 pts possible Use the fol

Question

This Question: 3 pts 6 of 38 (1 complete) This Test: 82 pts possible Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 145 subjects with positive test results, there are 26 false positive results, among 160 negative results, there are 2 false negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Hint: Construct a table.) The probability that a randomly selected subject tested negative or did not use marijuana is (Do not round until the final answer. Then round to three decimal places as needed)

Explanation / Answer

P(Subject tested negative or did not use Marijuana)

= (160 + 26) / (145 + 160)

= 186/305

= 0.610

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