1.

Given that X ~ B( n=10, p) .If E (x) = 8, find the value of p .A. `0.6`B. `0.7`C. `0.8`D. `0.4`

Answer» Given, `X~B(n=10,P).`
`E(X)=8`
`E(X)=nP`
`therefore nP=8`
`10P=8`
`P=0.8`
Hence the correct answer from the given alternative is (c ).


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