Question

Use the following results from a test for marijuana use. Among 154 subjects with positive test results, there are 26 false positive results. Among 137 negative test results, there are 2 false negative results.

a. How many subjects are included in the study?

b. How many of the subjects had a true negative result?

c. What is the probability that a randomly selected test subject had a true negative result?

a. There are _______  subjects included in the study.

(Type a whole number.)

Answer 1

given data :-

a test for marijuana use which is provided by a certain drug drug testing company the results are,  

among 154 subjects with positive test results, they are 26 subjects false positive results

and

among 137 negative results there are 2 false negative results

now we need to find out the how many subjects are included in the study

here,

the total study of subjects are = 154 + 137

= 291

there are 291 subjects are in the study