Posted by **Anonymous** on Friday, December 4, 2009 at 9:49am.

An athlete suspected of having used steroids is given two tests that operate independently of each other. Test A has probability 0.91 of being positive if steroids have been used. Test B has probability 0.77 of being positive if steroids have been used.

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**bobpursley**, Friday, December 4, 2009 at 10:00am
and the question is....

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**Yup**, Tuesday, February 15, 2011 at 5:06pm
.02

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