If P(A|B) = 0.4 and P(B) = 0.5, P(A∩B) is: MCQ with Answer and Explanation

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If P(A|B) = 0.4 and P(B) = 0.5, P(A∩B) is:

A. 0.2

B. 0.4

C. 0.8

D. 0.9

Answer: Option A

Solution (By JKSSB Mock Tests)

P(A∩B) = P(A|B) P(B) = 0.4 × 0.5 = 0.2.

This question belongs to: Accountancy and Statistics Statistics

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The median of 5, 3, 8, 10, 12, 15 is:

A. 8

B. 12

C. 9

D. 10

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Correct Answer: Option C

Explanation:
Ordered: 3,5,8,10,12,15. Even number, median = (8+10)/2 = 9.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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:

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Correct Answer: Option D

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This question belongs to: Accountancy and Statistics Statistics

Question #3

A researcher wants to compare mortality between two towns with different age structures. She should use:

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Correct Answer: Option B

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This question belongs to: Accountancy and Statistics Statistics

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