This Question: 8 pts 100121 (1 complete) b This Test: 200 pts possible Question

Question

This Question: 8 pts 100121 (1 complete) b This Test: 200 pts possible Question Help * Use the following results from a test for marjuana use, which is provided by a certain drug tesing company. Among 142 subjects with positive test resuts, there are 24 aise positive results, among 151 negative results, there are 5 false negative resuits Itf one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marjuana (Hint Construct a table) Theprobabiltythat a randomly selected sub ect tested negative or didnt use mariana is (Do not round unsi the final answer Then rond toree decimal places as needed ) Enter your answer in the answer borx 6 command optio ion command

Explanation / Answer

from above:

therefore required probability =(151+24)/293= 0.597

test positive test negative Total positive for marijuana 118 5 123 negative for marijuana 24 146 170 Total 142 151 293

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