CA Foundation P3 · Chapter 16 · Question 1 of 9
For a binomial distribution with n = 10 and p = 0.4, the variance is:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: A) 2.4
Explanation
Variance = npq = 10 x 0.4 x 0.6 = 2.4. The mean is np = 4, and √2.4 ≈ 1.55 is the standard deviation.
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