examsnet
Home
Exams
JEE Exams
UPSC Entrance Exams
Engineering Exams
Banking Entrance Exams
Medical Entrance Exams
MBA Entrance Exams
MCA Entrance Exams
LAW Entrance Exams
Teacher Exams
Public Service Commission
SSC Exams
RRB Entrance Exams
International Exams
Insurance Exams
Other Entrance Exams
CBSE
CBSE X Papers
CBSE XII Papers
NCERT XI Solutions
NCERT XII Solutions
State
Andhra
Maharashtra
Telangana
Tamil Nadu
Apps
About
Contact
Test Index
MHTCET 2016 Maths Question Paper with solutions for online practice
Show Para
Hide Para
Question : 1
Total: 50
(
1
2
)
11
(
1
2
)
10
(
1
2
)
6
(
1
2
)
91
Validate
Solution:
(b) Here, mean E(X) = 5
and variance, Var (X) = 2.5
⇒ np = 5 and npq = 2.5
⇒ 5q = 2.5 ⇒ q =
1
2
Also,p + q = l ⇒ P = 1 -
1
2
=
1
2
∵ np = 5
⇒ n ×
1
2
= 5 ⇒ n = 10
p
(
X
<
1
)
=
p
(
X
=
0
)
=
n
C
r
p
r
q
n
−
r
=
10
C
0
(
1
2
)
0
(
/
1
2
)
10
−
0
=
1
×
1
×
(
1
2
)
10
=
(
1
2
)
10
© examsnet.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Next Question