# The probability of r successes in case of poission distribution is

1.  erm/∠r

2.  rmem/∠r

3.  emr/∠r

4.  e-mmr/∠r

4

e-mmr/∠r

Explanation :
No Explanation available for this question

# The S.D of poission distribution whose mean is λ is

1.  λ

2.  √λ

3.  λ3

4.  1/√λ

4

√λ

Explanation :
No Explanation available for this question

# If m is the variance of P.D ,then sum of the terms in even places is

1.  e-m

2.  e-m cosh m

3.  e-msinh m

4.  e-mcoth m

4

e-msinh m

Explanation :
No Explanation available for this question

# The standard deviation of P.D is 1.5,then its mean is

1.  1.5

2.  2

3.  2.25

4.  3.25

4

2.25

Explanation :
No Explanation available for this question

# All the numbers that can be formed using all the digits, 1,2,3,4 are arranged in the increasing Order in magnitude.The rank of the number 3241 is

1.  56

2.  16

3.  55

4.  15

4

56

Explanation :
No Explanation available for this question

# If a random variable X follow P.D such that p(X=1)=p(X=2),then its mean and varience are

1.  1;1

2.  2; 2

3.  2;(3)1/2

4.  2;4

4

2; 2

Explanation :
No Explanation available for this question

# If X is a poission variable such that p(X=2)=9p(X=4)+90p(X=6),then the mean of X is a

1.  3

2.  2

3.  1

4.  0

4

1

Explanation :
No Explanation available for this question

# If X is a poission variable such that p(X=0)=0.1,p(X=2)=0.2 then the parameter λ is

1.  2

2.  4

3.  3

4.  5

4

2

Explanation :
No Explanation available for this question

# There are 25 railway stations between Nellore and Hyderabad.The number of different kinds of single second class ticket to be printed so as to enable a passenger tob travel from the station to another is

1.  25P2

2.  26P2

3.  27P2

4.  28P2

4

27P2

Explanation :
No Explanation available for this question

1.  24

2.  144

3.  360

4.  720

4