+0  
 
0
50
1
avatar

An IRS auditor randomly selects 3 tax returns from 61 tax returns of which 9 contain errors. What is the probability that she selects all those containing errors? This is unusual probability?

 Feb 29, 2020
 #1
avatar+6179 
0

\(p = \dfrac{\dbinom{9}{3}\dbinom{52}{0}}{\dbinom{61}{3}} = \dfrac{42}{17995} \approx 0.002334 = 0.2334\%\\ \text{So yeah, pretty small probability}\)

.
 Mar 1, 2020

40 Online Users

avatar
avatar
avatar
avatar
avatar
avatar
avatar
avatar