Vital statistics are primarily concerned with: MCQ with Answer and Explanation

Vital statistics are primarily concerned with:

A. Economic indicators

B. Agricultural output

C. Industrial production

D. Events like births, deaths, marriages

Answer: Option D

Vital statistics deal with vital events such as births, deaths, marriages, and divorces.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

A bag contains 5 red, 4 blue, 3 green balls. Two balls are drawn without replacement. Probability that both are same color is:

A. 15/66

B. 19/66

C. 12/66

D. 20/66

Correct Answer: Option B

Explanation:
Total ways C(12,2)=66. Favorable: C(5,2)+C(4,2)+C(3,2) = 10+6+3=19. Probability=19/66.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

If the events A and B are mutually exclusive and P(A)=0.4, P(B)=0.5, then P(A∪B) is:

A. 0.9

B. 0.1

C. 0.7

D. 0.2

Correct Answer: Option A

Explanation:
0.4+0.5=0.9.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

If A and B are independent, then P(A|B) equals:

A. P(B)

B. P(A)

C. P(A∩B)

D. P(A) + P(B)

Correct Answer: Option B

Explanation:
Independence means the occurrence of B does not affect the probability of A.

This question belongs to: Accountancy and Statistics Statistics