QCEVault

Discrete random variables — Question 174

Original QCE Vault practice · 4 marks

Q174 · Practice questionTechnology-activeComplex familiar4 marks

QUESTION 174 (4 marks)

Let X∼Bin⁡(n,0.4)X\sim\operatorname{Bin}(n,0.4). Given that Var⁡(X)=4.8\operatorname{Var}(X)=4.8, determine nn and then calculate P(X≥10)P(X\ge10).
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