A committee of 4 is to be selected from 5 men and 4 women. The probability that the committee has exactly 2 women is: MCQ with Answer and Explanation
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Question #1
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For mutually exclusive events A and B with P(A)=0.4, P(B)=0.3, P(A∪B) is:
Correct Answer: Option C
Explanation:
Since A and B are mutually exclusive, P(A∪B) = P(A) + P(B) = 0.7.
Since A and B are mutually exclusive, P(A∪B) = P(A) + P(B) = 0.7.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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If the mean of a set of 10 observations is 20, and 5 is added to each observation, what will be the new mean?
Correct Answer: Option A
Explanation:
The arithmetic mean is affected by the change of origin. If a constant is added to all observations, the mean increases by that constant.
The arithmetic mean is affected by the change of origin. If a constant is added to all observations, the mean increases by that constant.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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The main source of vital statistics in India is:
Correct Answer: Option D
Explanation:
Civil registration system records births and deaths as they occur.
Civil registration system records births and deaths as they occur.
This question belongs to:
Accountancy and Statistics
Statistics
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