In a standard deck, the probability of drawing a red king is: MCQ with Answer and Explanation
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Question #1
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In a class, 60% students pass in English and 70% in Mathematics. 20% fail in both. The percentage that pass in at least one subject is:
Correct Answer: Option D
Explanation:
Pass in at least one = 100% - fail in both = 100% - 20% = 80%.
Pass in at least one = 100% - fail in both = 100% - 20% = 80%.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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A box has 4 red, 3 blue, and 3 green balls. If two balls are drawn with replacement, the probability both are red is:
Correct Answer: Option C
Explanation:
With replacement, P(red) = 4/10 = 0.4 each draw. P(both red) = 0.4 × 0.4 = 0.16 = 16/100. Replacement ensures independence between draws.
With replacement, P(red) = 4/10 = 0.4 each draw. P(both red) = 0.4 × 0.4 = 0.16 = 16/100. Replacement ensures independence between draws.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If P(A∩B) = P(A)P(B), then events A and B are:
Correct Answer: Option D
Explanation:
That is the defining condition for statistical independence.
That is the defining condition for statistical independence.
This question belongs to:
Accountancy and Statistics
Statistics
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