An experiment consists of rolling a fair die. Event A = {2, 4, 6} and Event B = {3, 6}. What is P(A ∪ B)? MCQ with Answer and Explanation
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Question #1
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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 B
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
Question #2
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General Fertility Rate (GFR) is a better measure than Crude Birth Rate because:
Correct Answer: Option C
Explanation:
CBR uses total population, which includes males and children, while GFR targets the actual childbearing population.
CBR uses total population, which includes males and children, while GFR targets the actual childbearing population.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Which mean is the largest for a set of positive numbers?
Correct Answer: Option A
Explanation:
For positive numbers, AM ≥ GM ≥ HM.
For positive numbers, AM ≥ GM ≥ HM.
This question belongs to:
Accountancy and Statistics
Statistics
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