Question

estion 18 5 points Save Ans -en ployers use lie detector tests to screen job applicants Lie detector tests are not completely reliable Suppose that i. ale detector test, 65% of les re also identified as le. Ac rig my gives its job applicants a polyg ph nking D d y tell the truth on youry appli atir? Supp ethat 93% of ejet applea What is the probebility that a person who fails the test was actually telling the trwh? 0.259 identified alies ad datat ofthe sau ea a sell he nih dring d polygraph t 0.741 0.349 O 014

Answer 1

a)
X- lie is detected
Y- actually telling the truth

P(X|Y)=0.14
P(X|Y')= 0.65
P(Y)= 0.93

P(Y|X)
=P(Y and X)/P(X)
=0.93*0.14/(0.93*0.14+0.07*0.65)
=0.741

option B) is correct

Please rate