alleryFor a binomial distribution B(n, p), the MEAN and VARIANCE are:
AMean = p, Variance = np
BMean = np, Variance = np(1−p)
CMean = np², Variance = n²p
DMean = n+p, Variance = n×p
Answer & Solution
Correct answer: B. Mean = np, Variance = np(1−p)
Binomial B(n, p): mean = np; variance = np(1−p) = npq.
For p = 0.5 and n = 10: mean = 5, variance = 2.5.
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