If P(A|B) = P(A), then events A and B are: MCQ with Answer and Explanation

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If P(A|B) = P(A), then events A and B are:

A. Exhaustive

B. Mutually exclusive

C. Independent

D. Complementary

Answer: Option C

Solution (By JKSSB Mock Tests)

Independence means P(A|B) = P(A).

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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In a frequency distribution, the class width is 8, and the mid-value of a class is 42. The lower limit of that class is:

A. 36

B. 40

C. 38

D. 34

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Correct Answer: Option C

Explanation:
Lower limit = mid-value - width/2 = 42 - 4 = 38.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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The sample space for rolling a die once contains:

A. 36 outcomes

B. 12 outcomes

C. 6 outcomes

D. 3 outcomes

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Correct Answer: Option C

Explanation:
A standard die has six faces: 1,2,3,4,5,6.

This question belongs to: Accountancy and Statistics Statistics

Question #3

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The term 'demographic transition' refers to:

A. Change in age structure only

B. Shift from high birth and death rates to low birth and death rates

C. Increase in population density

D. Migration from rural to urban areas

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Correct Answer: Option B

Explanation:
Demographic transition is the historical shift from high fertility/mortality to low fertility/mortality.

This question belongs to: Accountancy and Statistics Statistics

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