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Given that X ~ B(n= 10, p). If E(X) = 8 then the value of - Mathematics and Statistics

Given that X ~ B(n= 10, p). If E(X) = 8 then the value of

p is ...........

(a) 0.6

(b) 0.7

(c) 0.8

(d) 0.4

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Solution

(c)

Since X ~ B(n = 10, p),
E(x) = np
10p = 8
p = 0.8

  Is there an error in this question or solution?
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