Reference no: EM132962052

Suppose that a polygraph is? 90% accurate? (it will correctly detect? 90% of people who are lying and it will correctly detect? 90% of people who are telling the? truth). The 1,980 employees of a company are given a polygraph test during which they are asked whether they use drugs. All employees say that they do not use drugs. Assume that anyone whom the polygraph operator finds untruthful is accused of lying.

Test finds employee lying
27 - Users
195 - Nonusers
222 - Total

Test finds employee truthful
3 - Users
1,755. - Nonusers
1,758 -

Totals 30 (users) 1,950 (nonusers) totals 1,980

Problem 1: How many employees accused of lying were actually? lying? 

Problem 2: How many employees accused of lying were telling the? truth?

Problem 3: What percentage of those accused of lying were falsely? accused?