A
B
0
D:-None of these
Correct Answer:- Option-A
Question53:-If ‘quadX* and ‘quadY* are two random variables having finite expectations, then the value
of ‘quadE["min"{X,Y}+"max"{X,Y}]* is
A:-less than *quadE(XY)*
B:-less than ‘quadE(X+Y)*
C:-equal to ‘quadE(XY)*
D:-equal to’ quadE(X+Y)*
Correct Answer:- Option-D
Question54:-The Poisson distribution ‘quadP(Lambda)* is unimodal when
A:-quadlambda* is not an integer
B:-’quadlambda® is an integer
C:-Both (1) and (2)
D:-Neither (1) nor (2)
Correct Answer:- Option-A
Question55:-Which of the following distribution is not a member of power series family of distributions?
A:-Binomial
B:-Poisson
C:-Geometric
D:-Hypergeometric
Correct Answer:- Option-D
Question56:-If *quadx* follows normal ‘quadN(mu,sigma)’ , then the approximate value of ‘quadE{|X-mu|}* is
A:-Zero
“sigma*
C:-‘quad4/Ssigma*
D:-* quadsqrt(4/Pi)sigma*
Correct Answer:- Option-C
Question57:-If *quadx’ is uniformly distributed with mean unity and variance 0.75, then ‘quadP(X>1)="
A:-0.25
B:-0.5
C:-0.75
D:-1
Correct Answer:- Option-B
Question58:-If *quadx* follows normal ‘quadN(mu,Sigma)* , then ‘quadY=e*X°* follows
A:-Log-normal distribution
B:-Exponential distribution
C:-Logistic distribution
D:-Pareto distribution
Correct Answer:- Option-A
Question59:-If *quadx_j* follows exponential ‘quadE(Theta_j)° distribution, for ‘quadj=1,2,...,n,° then the distribution
of ‘quad"min"{X_1,X_2,....X_n}*
A:-‘quadE(Theta_j)*
E (prod_{j=1}*n theta_j)*
C:-quadE(sum_(j=1)*nTheta_j)°
D:-* quadE["min"{Theta_1,Theta_2,...,Theta_n}]*
Correct Answer:- Option-C
Question60:-The mode of ‘quadF” -distribution is
A:-always less than unity
B:-sometimes less than unity
C:-always greater than unity
D:-sometimes equal to unity
Correct Answer:- Option-A

Question61:-"Simple random sampling" is the technique of drawing a sample in such a way that each unit of the population
has

A:-distinct and dependent chance of being included in the sample
B:-distinct but independent chance of being included in the sample
C:-an equal but dependent chance of being included in the sample