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1) A new test for the detection of baldness is devised. It is applied to a popul

ID: 3129795 • Letter: 1

Question

1) A new test for the detection of baldness is devised. It is applied to a population of 5,000 men who live in the USA. Based on the gold standard- namely, asking the subjects to remove their hats- 3,000 of the 5,000 men are bald. The new test detects 2,000 cases of baldness, of which 1,500 are positive by the gold standard and 500 are negative. Calculate the A) true positive, B) false positive, C) false negative, and D) True negative.

2) What are the values of A,B,C,D if it was 2,000 of the 5,000 men are bald instead of 3,000?

Explanation / Answer

A. true positive = 1500

B. False positive = 500

C. False negative = 1000

D. True negative = 2000

2. A = 1500

B = 500

C = 0

D = 3000