If (AB)=(A)(B)/N, the attributes are: MCQ with Answer and Explanation
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Question #1
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The wholesale price index in India is a:
Correct Answer: Option C
Explanation:
WPI measures wholesale price movements of goods.
WPI measures wholesale price movements of goods.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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In a certain test, 5% of patients have a disease. The test is positive for 90% of diseased and 10% of healthy. If a patient tests positive, the probability they have the disease is about:
Correct Answer: Option D
Explanation:
P(D)=0.05, P(+|D)=0.9, P(+|D')=0.1. P(D|+) = (0.05×0.9) / (0.05×0.9 + 0.95×0.1) = 0.045/(0.045+0.095)=0.045/0.14≈0.321.
P(D)=0.05, P(+|D)=0.9, P(+|D')=0.1. P(D|+) = (0.05×0.9) / (0.05×0.9 + 0.95×0.1) = 0.045/(0.045+0.095)=0.045/0.14≈0.321.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If P(A)=0.35, P(B)=0.55, and P(A∩B)=0.20, then P(A'∩B') is:
Correct Answer: Option D
Explanation:
P(A∪B)=0.35+0.55-0.20=0.70. P(A'∩B') = 1 - 0.70 = 0.30.
P(A∪B)=0.35+0.55-0.20=0.70. P(A'∩B') = 1 - 0.70 = 0.30.
This question belongs to:
Accountancy and Statistics
Statistics
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