Probability | Bayesian Statistics Quiz

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The events A and B are mutually exclusive, so:

1 point

Prob (A or B) = Prob (A) + Prob (B)

Prob (A and B) = Prob (A) X Prob (B)

Prob A) = Prob (B)

Prob A) + Prob (B) = 1

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You have diagnosed a patient clinically as having SLE and ordered 6 tests. Out of which 4 tests have come positive and 2 are negative. To determine the probability of SLE at this point, you need to know:

1 point

Prior probability of SLE; sensitivity and specificity of each test

Incidence of SLE and predictive value of each test

Incidence and prevalence of SLE

Relative risk of SLE in this patient

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There were 50 patients in a ward 20 girls and 30 boys of them 10 girls and 20 boys required surgery. What is the probability of each patient being selected correctly for surgery:

1 point

2/6

3/5

6/25

1/6

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Probability of Mr. Ram developing Acute MI in his lifetime is 0.75. What are his Odds of developing Acute MI in his lifetime?

1 point

3:4

3:1

4:3

1:3

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Chance of passing a Genetic disease “y” trait by the affected parents to children is 0.16. They plan to have two children. Probability of both the children having “y” trait is:

1 point

Zero

0.16

0.32

0.0256

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For Mrs Rekha, probability of having a baby of BW < 2500 gms is 0.50 and of having a BW 2500-2999 gms is 0.20. So the probability for Mrs. Rekha to have a baby of BW < 3 kg is:

1 point

0.30

0.70

0.10

1.0

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