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In a binomial distribution the mean is 4 and the variance is 3. What is its mode?
- 5
- 4
- 3
- None of these
Correct answer: 4
Solution
From np = 4 and npq = 3 we get q = 3/4, p = 1/4, n = 16; the mode = floor((n+1)p) = floor(17/4) = 4.
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