A) 7
B) 8
C) 9
D) 10
Correct Answer: D
Solution :
[d] In binomial distribution, Mean = np = 10, variance = npq = 5 \[\therefore p=q=\frac{1}{2}\] Let x be the mode, then \[np+p>x>np-q\] \[\therefore 10+\frac{1}{2}>x>10-\frac{1}{2}\Rightarrow \frac{21}{2}>x>\frac{19}{2}\] \[\Rightarrow 9.5<x<10.5\Rightarrow x=10.\]
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