Question

1. Population of heads when a coin is tossed infinitely is known as ....................population



A. Finite

B. Existent

C. Imaginary

E. Prabalistic

2.If P(A) = 1, then the event A is known as



A. Symmetric event

B. Dependent event

C. Improbable event

E. Sure event

3.If an unbiased coin is tossed three times, what is the probability of getting three heads?



A. 7/8

B. 1/8

C. 1/2

D. 1/4

4.Parameter is a characteristic of



A. Population

B. Sample

C. Statistic

D. Obervation

5. Simple random sampling is

A. Probabilistic sampling

B. Non - Probabilistic sampling

C. Mixed Sampling

D.Stratified sampling

6Mean of the binomial distribution is


A. np(1-p)

B. np

C. nq

D. n(1-p)

7.Total area of the normal curve is

A. 0.5

B.1

C.50%

D.between -infinty to infinty

8.Normal curve is


A. U shaped

B. J shaped

C. Bell shaped

D. line shaped

10) ............................ method of sampling is used when the population is heterogeneous



A. Random sampling method

B. Systematic sampling

C. stratified sampling

D. Multi stage sampling

11.Poisson Distribution is a ......... parametric distribution

A. uni

B. bi

C. tri

D. none

13.The units forming the sample are known as

A. sample size

B. sampling units

C. sampling frame

D. sampling

14.A binomial distribution is

A. never symmetrical

B. never positively skewed

C. never negatively skewed

D. symmetrical when p = 0.5

15.The mean of a binomial distribution is

A. always more that its varience

B. always equal to its varaince

C. always less that its varience

D. always equa to its SD

16.The mean and mode of a normal distribution


A.may be equal

B.may be different

C.are always equal

D.are always different

17.Number of misprints per page of a thick book follows

A. Normal distribution

B. Poisson Distribution

C. Binomial distribution

D. Standard Normal Distribution

18.X is a binomial variable with n = 20. What is the mean of X if it is known that X is symmetric?

A. 5

B. 10

C. 2

D. 1

19.If X and Y are 2 independent normal variable with mean as 10 and 12 and SD as 3 and 4, the (X+Y) is normally distributed with

A. mean = 22 and SD = 7

B. mean = 22 and SD = 25

C. mean = 22 and SD = 5

D. mean = 22 and SD = 49

20.Value of a ................... is different for different samples

A. skill

B. parameter

C. statisitc

D. fraction

21.For a Poisson variate X, P (X=1) = P (X=2). What is the mean of X

A. 1.5

B. 2

C. 1

D. 2.5


​

Answer 1

Step-by-step explanation:

imaginary

sure event

1by2