Statistics help with these questions

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 20th, 2015

a.                                           Positive

                           Y           N

Has Disease     99           1

Disease-free      200        9800


b. 99/(99+200)=99/299, approxximately 1/3

c.1/(9800+1); approximately .0001

Apr 20th, 2015

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