Question

If X ∼ B`(20, 1/10)` then E(X) = ______.

विकल्प

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Answer 1

If X ∼ B`(20, 1/10)` then E(X) = 2.

Explanation:

Given,

X ∼ B `(20, 1/10)`

∴ Here, n = 20 and p = `(1)/(10)`

∴ E(x) = np = `20 xx (1)/(10)` = 2.