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Secure https://www.mathxl.com/Student/PlayerHomework.aspx?homeworkld -457232435&questionld; 1&flushed; false&cld; 4540817&centerw; MAT 120 Amanda Brown 10/18/17 3:54 PM Save Homework: Homework #7 Score: 0 of 3 pts 11 of 30 (26 complete) HW Score: 73.02%, 46 of 63 pts 4.2.23 Question Help * company. Among 149 subjects with positive test results, there are 20 false positive results among 151 negative results, there are 2 talse negative results. If one of the test subjects is randomly selected, fnd 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 decimall places as needed.) Enter your answer in the answer box and then click Check Answer Check Answer Clear A

Explanation / Answer

P(tested negative or did not use marijuana) = P(tested negative) + P(did not use marijuana) - P(tested negative and did not use marijuana)

= 151/300 + 22/300 - 2/300

= 0.57

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