Use the data in accompanying table 3. for question If 1 of the 100 subjects is r

Question

Use the data in accompanying table 3. for question If 1 of the 100 subjects is randomly selected, find the probability of getting a. someone who told a lie. b, someone for whom the polygraph test told a lie was being told. someone who told a lie or had the polygraph test indicating that a lie was being told. someone who told the truth or had the polygraph test indicate that the truth was being told. If two different subjects are randomly selected, find the probability that they both told the truth. both had the polygraph test indicate that a lie was being told If one subject is randomly selected, find the probability that g. he or she told the truth, given that the polygraph test indicated that a lie was being told. h. he or she has a polygraph test indication that a lie was being told, given that the subject actually told the truth.

Explanation / Answer

a) probabilty =20/100=0.2

b)=32/100=0.32

c)=(3+17+15)/100=0.35

d)=(65+15+3)/100=0.83

e)=(80/100)*(79/99)=0.6384

f)=(32/100)*(31/99)=0.1002

g)=15/32=0.46875

h)=15/80=0.1875

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