A 'life table' provides estimates of: MCQ with Answer and Explanation
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Question #1
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If P(A) = 2/3 and P(B) = 1/2 and A, B are independent, then P(A∩B) is:
Correct Answer: Option B
Explanation:
2/3 × 1/2 = 1/3.
2/3 × 1/2 = 1/3.
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Accountancy and Statistics
Statistics
Question #2
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If the price index for 2021 (base 2020) is 110 and for 2022 (base 2021) is 105, the chain index for 2022 with base 2020 is:
Correct Answer: Option D
Explanation:
Chain index = 110 × (105/100) = 115.5.
Chain index = 110 × (105/100) = 115.5.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If the geometric mean of two numbers is 12 and one number is 18, the other number is:
Correct Answer: Option A
Explanation:
Geometric mean = √(x×y). Given √(18×y)=12, square both sides: 18y=144, so y=144/18=8. This uses the definition of geometric mean for two values.
Geometric mean = √(x×y). Given √(18×y)=12, square both sides: 18y=144, so y=144/18=8. This uses the definition of geometric mean for two values.
This question belongs to:
Accountancy and Statistics
Statistics
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