Probability

Question

Comments

I am gettingvoption c

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yes c.

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Test:

+ve (.01)

-ve (0.99)

incorrect results =12%of +ve OR 15% of -ve 

= .12 * .01 + .15*.99 = .1497

Answer 1

P(Pos) = 0.01

P(Neg) = 0.99

P( Correct | Pos) =0.88

P(Incorrect | Pos) = 0.12

P( Correct |~Pos) = P(Correct | Neg) = 0.85

P( Incorrect |~Pos) = P(Incorrect | Neg) = 0.15

P(Incorrect) = P(Incorrect | Pos)* P(Pos) + P(Incorrect | Neg)*P(Neg)

P(Incorrect) = 0.12*0.01 + 0.15*0.99 = 0.1497