SOLUTION: Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 144 subjects with positive test results, there are 26 fals
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Question 1182304: Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 144 subjects with positive test results, there are 26 false positive results. Among 151 negative results, there are 4 false negative results. Complete parts (a) through (c). (Hint: Construct a table.)
a. How many subjects were included in the study?
The total number of subjects in the study was.......
b. How many subjects did not use marijuana?
A total of.... subjects did not use marijuana.
c. What is the probability that a randomly selected subject did not use marijuana?
The probability that a randomly selected subject did not use marijuana is ....
(Do not round until the final answer. Then round to three decimal places as needed.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
==== Test+--------Test- ------Total
Use+==118-----------4----------122
Use-===26-----------147---------173
Total---144----------151----------295
a. 295
b.173
c.173/295, or 0.586
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