WorksheetsBinomial Lecture Practice
Total questions: 9
Worksheet time: 16mins
Name
Class
Date
1.
If X~B(100, 1/3), then E(X)=
a)
200/9
b)
100/3
c)
100
d)
300
2.
If X~B(30, 1/6), then Var(X)=
a)
5/√6
b)
25/6
c)
5
d)
√5
3.
If X~B(20,2/5), then P(X=3)=
a)
0.0123...
b)
0.0160...
c)
0.984...
d)
0.987...
4.
If X~B(10,3/5), then P(X<5)=
a)
0.201...
b)
0.166...
c)
0.367...
d)
0.633
5.
If X~B(15, 2/7), if P(X>8)=
a)
0.912...
b)
0.965...
c)
0.0875...
d)
0.000769...
6.
If X~B(20, 2/9), the mode of X is ...
(a)
7.
if X~B(25, 5/7), what is the smallest value of n if P(X≤n)>0.7
(a)
8.
If X~B(n, 2/11), find the largest value of n if P(X=3)>0.2
(a)
9.
If X~B(20, 1/3), find the value of P(X=0)+P(X=1)+P(X=2)+P(X=10)+P(X=11)+P(X=12). Leave answer in 3 s.f.
(a)
100 %
