For what percent of those tested for a certain infection was the test accurate; that is, positive for those who had the

This topic has expert replies
Moderator
Posts: 2237
Joined: Sun Oct 29, 2017 2:08 pm
Followed by:2 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

GMAT Prep

For what percent of those tested for a certain infection was the test accurate; that is, positive for those who had the infection and negative for those who did not have the infection?

1) Of those who tested positive for the infection, 1/8 did not have the infection

2) Of those tested for the infection, 90 percent tested negative

OA E