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Author Question: Suppose that a polygraph is 90% accurate (it will correctly detect 90% of people who are lying and ... (Read 92 times)

nummyann

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on: Jan 18, 2020
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 2000 employees of a company are given a polygraph test during which they are asked whether they have been stealing from the company.  All of them deny stealing, when in fact 1% of the employees actually have been stealing.  Assume that anyone whom the polygraph operator finds untruthful is accused of lying.



a.  How many employees are accused of lying?  Of theses, how many were actually lying and how many were telling the truth?  What percentage of those accused of lying were falsely accused?
b.  How many employees are found truthful?  Of these, how many were actually truthful?  What percentage of those found truthful were really truthful?
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Marked as best answer by nummyann on Jan 18, 2020

alvinum

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Reply #1 on: Jan 18, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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nummyann

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Reply 2 on: Jan 18, 2020
Great answer, keep it coming :)

Missbam101

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Reply 3 on: Yesterday
Wow, this really help

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