Question 35927
VARIANCE =24/5
RMS DEVIATION =SIGMA=S SAY = SQRT(24/5)=2.191
HENCE THE DEVATION OF 4.3818 IS AMOUNTING TO 2*S VARIATION...AS PER NORMAL DISTRIBUTION OVER 95% OF DATA ARE ON THIS 2S DEVIATION LEVEL.HENCE A IS MOST APPROPRIATE ANSWER THOUGH IT IS ONLY 80%