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Sagot :
Answer:
81%
Explanation:
0.86 · 930 = 799.8 ⇒ 800 men
Other 130 men have negative PSA test
2620 - 930 = 1690 ⇒ 1690 without cancer
0.33 · 1690 = 557.8 ⇒ 558 men no cancer + negetive PSA tests
1690 - 558 = 1132
*view attachment below*
Positive perdictive value = 800/1932 = 0.42 = 42%
Negative predictive value = 558/688 = 0.81 = 81%.
The probability of not having prostate cancer among men with a negative PSA test is 81%
Sorry if it's very unclear, Good luck <3

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