The probability of drawing a Spade from a well-shuffled deck of 52 cards is: MCQ with Answer and Explanation
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Question #1
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If A and B are independent events with P(A)=0.5, P(B)=0.4, P(A∪B) is:
Correct Answer: Option C
Explanation:
P(A∪B) = 0.5 + 0.4 - (0.5×0.4) = 0.9 - 0.2 = 0.7.
P(A∪B) = 0.5 + 0.4 - (0.5×0.4) = 0.9 - 0.2 = 0.7.
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Accountancy and Statistics
Statistics
Question #2
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Age-specific fertility rate for age group 25-29 is 120 per 1000 women. If there are 15,000 women in this age group, the expected number of births to them is:
Correct Answer: Option B
Explanation:
Births = ASFR × (number of women) / 1000 = 120 × 15000 / 1000 = 1800.
Births = ASFR × (number of women) / 1000 = 120 × 15000 / 1000 = 1800.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Standardized Death Rate for Population A is calculated using Population B's age structure as standard. This allows:
Correct Answer: Option C
Explanation:
By applying A's age-specific death rates to B's standard population, SDR isolates differences in mortality risk from differences in age composition, revealing true mortality level comparisons.
By applying A's age-specific death rates to B's standard population, SDR isolates differences in mortality risk from differences in age composition, revealing true mortality level comparisons.
This question belongs to:
Accountancy and Statistics
Statistics
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