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AP EAMCET Parameter Recovery — practice questions

2 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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If $E(X) = 6$ and $\text{Var}(X) = 4.2$ for $X im B(n, p)$, then $n$ and $p$ are:Mean and variance of a binomial distribution are 18 and 12 respectively. The value of $n$ is: