If P(A∩B) = P(A)P(B), then events A and B are: MCQ with Answer and Explanation
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Question #1
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If all observations are multiplied by a constant k, the geometric mean is multiplied by:
Correct Answer: Option A
Explanation:
GM of (kx) = k × GM of x, since GM(kx) = (kⁿ ∏x)^(1/n) = k (∏x)^(1/n).
GM of (kx) = k × GM of x, since GM(kx) = (kⁿ ∏x)^(1/n) = k (∏x)^(1/n).
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Net Reproduction Rate (NRR) adjusts for:
Correct Answer: Option B
Explanation:
NRR takes into account that some women may die before completing childbearing.
NRR takes into account that some women may die before completing childbearing.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The probability of getting at least one head in two tosses of a fair coin is:
Correct Answer: Option B
Explanation:
P(at least one head) = 1 - P(no heads) = 1 - P(TT) = 1 - 1/4 = 3/4. Alternatively, favorable outcomes: HH, HT, TH (3 out of 4), so 3/4.
P(at least one head) = 1 - P(no heads) = 1 - P(TT) = 1 - 1/4 = 3/4. Alternatively, favorable outcomes: HH, HT, TH (3 out of 4), so 3/4.
This question belongs to:
Accountancy and Statistics
Statistics
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