Discussion Forum

If the mean of a binomial distribution is 25, then its standard deviation lies in the interval

Answer:

Explanation:

Standard deviation ,   $\sigma= \sqrt{npq}\geq 0$

 Now mean =np= 25 and q <1

 So $\sigma$= $\sqrt{npq}$ < $\sqrt{np}=5$

$\therefore$     $0\leq\sigma<5$