This Question: 1 pt 120f30(!complete) This Test: 30 pts possible Use the followi

Question

This Question: 1 pt 120f30(!complete) This Test: 30 pts possible Use the following results form a test for mar arause which is provided by a oo tan drug testing companArnong 145 sut ects with positive test results, there ar 22 false positive results. Among 157 negative results, there are 4 faise negative results. Complete parts (a) through (c) Hint Construct a table a. How many subjects were indluded in the study? The total number of subjects in the study was b. How many subjects did not use marjuana? Atotal of ·bets did not use mariana. c. What is the probability that a randomly selected subject did not use marijuana? The probablity that a randonly selected subject did not use man Nana is Do not round until the final answer Then round to three deaimal places as needed) Enter your answer in each of the answer boxes @O

Explanation / Answer

a)

total subjects =302

b)

a total of 175 subjects did not use .......

c)

probability= 175/302=0.579

test result positive negative total use 123 4 127 do not use 22 153 175 total 145 157 302

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