Applying Bayes Theorem Comments
Comments
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The calculator is correct, the formula is wrong. The denominator should be bracketed together to group the two probabilities of positive results together - .94 * 1/133 /( .94 * 1/133 + .27*132/133) = .025697 = 2.6%
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Rod's comment above seems correct.
We need find P(Celiac|Positive) which according to the formula should be equal to (P(Positive|Celiac)*P(Celiac))/P(Positive)However, the answer is marked incorrect
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Sorry for the error, the answer has been updated.
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2.57% is incorrect? you have to fix that
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Please enter your answer in decimal form (eg 0.0257)
Michael
Sep 2, 10:08 AMI insert the same numbers to calculator like this:
(1/133*0.94)/((1/133*0.94)+(132/133*0.27)) and the result is 0.025697102241662106... please fix the calculator