se.html? ourseld_14020253aOperwellur! IMAC-ob2d Il a search Assignmont Helena Co

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se.html? ourseld_14020253aOperwellur! IMAC-ob2d Il a search Assignmont Helena College Fail 207 Homework: Homework 6.6 Score: 0.45 of 1 pt 6.6.15-LS HW Score: 79 44%, 7 15 of 9 pt 6or 8 (8 complete) a Assigned Media | Question Help efective in correctly detecting steroids in users . " is estimated that 12% of Olympic athletes use steroids. The test currently being used to detect steroids is sad to be 93% dote r eroty ty that he actually takes steroids? yields false posit es an only 3% f the tests A country's best eg tifter tests post e what is the pr bat Pr( +testisteroids) Pr testisteroids)' Pif testino steroids) + Pr-testisteroids)+ Pr(-testino steroids) c . Pr(steroids) . Pr( + testisteroids) + Prino steroids)-Pr( + test no steroids) B. Prísteroids) Prí+ testisteroids) Pr(steroids)-Prt(-testisteroids) Prísteroids)- Pr-testisteroids) Príno steroids)-Pri(+testino steroids) The probability that the athlete had a positive test and is actually on steroids is (Type an integer or a simplified fraction.) Enter your answer in the answer box and then cick Check Answer Answer Clear All. All parts showing

Explanation / Answer

Question 1 Option C is correct.

Pr(Athlete tested positive and is acctually on steroids) = 0.12 * 0.93/ (0.12 * 0.93 + 0.88 * 0.03) = 0.8087

Question 2

Here option C is correct.

False positive rate = 0.28

False negative rate= 0.22

Pr(Women has positive mamongram has cancer)= 0.02 * (1 - 0.22)/ [0.02 * (1- 0.22) + 0.98 * 0.28] = 0.0156/ 0.29 = 0.0538

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