In a life table, the column denoted by 'l_x' represents: MCQ with Answer and Explanation
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Question #1
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Conditional probability P(B|A) is defined as P(A ∩ B) / P(A) provided that:
Correct Answer: Option A
Explanation:
The definition of conditional probability requires P(A) > 0 to avoid division by zero; if P(A)=0, P(B|A) is undefined.
The definition of conditional probability requires P(A) > 0 to avoid division by zero; if P(A)=0, P(B|A) is undefined.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Which sampling method is MOST appropriate for collecting primary data from a heterogeneous population with distinct subgroups?
Correct Answer: Option A
Explanation:
Stratified sampling divides the population into homogeneous subgroups (strata) and samples from each, ensuring representation of all key segments and improving precision for subgroup analysis.
Stratified sampling divides the population into homogeneous subgroups (strata) and samples from each, ensuring representation of all key segments and improving precision for subgroup analysis.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If P(A)=0.6, P(B)=0.5, P(A∩B)=0.4, then P(A|B) is:
Correct Answer: Option D
Explanation:
P(A|B) = P(A∩B)/P(B) = 0.4/0.5 = 0.8.
P(A|B) = P(A∩B)/P(B) = 0.4/0.5 = 0.8.
This question belongs to:
Accountancy and Statistics
Statistics
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