An experiment consists of rolling a fair die. Event A = {2, 4, 6} and Event B = {3, 6}. What is P(A ∪ B)? MCQ with Answer and Explanation

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An experiment consists of rolling a fair die. Event A = {2, 4, 6} and Event B = {3, 6}. What is P(A ∪ B)?

A. 1/2

B. 1/3

C. 5/6

D. 2/3

Answer: Option D

Solution (By JKSSB Mock Tests)

A ∪ B = {2, 3, 4, 6}. Four favorable outcomes. P(A ∪ B) = 4/6 = 2/3.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which rate provides the most refined analysis of mortality by breaking it down by specific criteria (age, sex, occupation)?

A. Standardized Death Rate

B. Infant Mortality Rate

C. Crude Death Rate

D. Specific Death Rate

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Correct Answer: Option D

Explanation:
Specific death rates measure mortality within specific subgroups, removing confounding variables like age structures.

This question belongs to: Accountancy and Statistics Statistics

Question #2

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As per Census 2011, which state had the highest population density among major states?

A. Kerala

B. Bihar

C. Uttar Pradesh

D. West Bengal

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Correct Answer: Option B

Explanation:
Bihar had the highest density (1106 persons/sq km) among the major states in 2011.

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Question #3

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If Q = 1, the association between attributes is:

A. Perfect negative

B. Perfect positive

C. Zero association

D. Independent

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Correct Answer: Option B

Explanation:
Q = 1 means ad = bc? Actually Q=1 when bc=0, i.e., perfect positive association.

This question belongs to: Accountancy and Statistics Statistics

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