A) 5
B) 6
C) 4
D) none of these
Correct Answer: C
Solution :
In binomial distribution mean\[=np,\]variance \[=npq.\] Given \[np=4,\text{ }npq=3\] \[\Rightarrow \] \[q=\frac{3}{4}\] \[p=1-\frac{3}{4}=\frac{1}{4}\] Mode is an integer\[x\]such that \[np+p>x>np-p\] \[\Rightarrow \] \[4+\frac{1}{4}>x>4-\frac{3}{4}\] \[\Rightarrow \] \[3.25<x<4.25\] \[\therefore \] \[x=4\]You need to login to perform this action.
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