Neonatal Mortality Rate (NMR) specifically covers deaths in the first: MCQ with Answer and Explanation
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Question #1
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If P(A)=0.35, P(B)=0.55, and P(A∩B)=0.20, then P(A'∩B') is:
Correct Answer: Option C
Explanation:
P(A∪B)=0.35+0.55-0.20=0.70. P(A'∩B') = 1 - 0.70 = 0.30.
P(A∪B)=0.35+0.55-0.20=0.70. P(A'∩B') = 1 - 0.70 = 0.30.
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Accountancy and Statistics
Statistics
Question #2
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A cumulative frequency distribution shows the number of observations:
Correct Answer: Option D
Explanation:
Cumulative frequencies sum frequencies up to a certain point (less than type) or from a point (more than type).
Cumulative frequencies sum frequencies up to a certain point (less than type) or from a point (more than type).
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Accountancy and Statistics
Statistics
Question #3
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A bag contains 3 red and 2 blue balls. Two balls are drawn at random without replacement. The probability that both are red is:
Correct Answer: Option A
Explanation:
P(both red) = (3/5) × (2/4) = 6/20 = 3/10. Without replacement, the probability changes after the first draw, requiring multiplication of conditional probabilities.
P(both red) = (3/5) × (2/4) = 6/20 = 3/10. Without replacement, the probability changes after the first draw, requiring multiplication of conditional probabilities.
This question belongs to:
Accountancy and Statistics
Statistics
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