Question 1192601
mean is np=25.2
variance is np(1-p)=25.2*0.70=17.64
sd = sqrt (V)=4.2
z(min)=(19.5-25.2)/4.2
=-5.7/4.2=-1.36
-
z=(30.5-25.2)/4.2
=5/3/4.2
=1.26
probability z between those two values is 0.8093