If the Arithmetic Mean (AM) of two positive numbers is 10 and their Geometric Mean (GM) is 8, what is their Harmonic Mean (HM)? MCQ with Answer and Explanation
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Question #1
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Life expectancy at birth is an indicator of:
Correct Answer: Option C
Explanation:
Life expectancy summarizes the mortality pattern of a population.
Life expectancy summarizes the mortality pattern of a population.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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Population policy in India aims to achieve:
Correct Answer: Option A
Explanation:
The National Population Policy 2000 aims for population stabilization by 2045.
The National Population Policy 2000 aims for population stabilization by 2045.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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If the probability of a student passing an exam is 0.8 and the probability of another student passing is 0.7, and these events are independent, the probability that at least one passes is:
Correct Answer: Option C
Explanation:
P(at least one) = 1 - P(both fail) = 1 - (0.2×0.3) = 1 - 0.06 = 0.94.
P(at least one) = 1 - P(both fail) = 1 - (0.2×0.3) = 1 - 0.06 = 0.94.
This question belongs to:
Accountancy and Statistics
Statistics
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