STA301 Quiz No.3 Shared by Amara

Question # 1 of 10 ( Start time: 10:57:59 PM ) Total Marks: 1
The standard normal distribution has it mean and variance equal to:
Select correct option:
1 and 0 respectively
0 and 0 respectively
1 and 1 respectively
0 and 1 respectively


Question # 2 of 10 ( Start time: 10:57:59 PM ) Total Marks: 1
Which of the following is a major difference between the binomial and the hyper geometric distributions?
Select correct option:
The sum of the outcomes can be greater than 1 for the hyper geometric.
The probability of a success changes from trial to trial in the hyper geometric distribution
The number of trials changes in the hyper geometric distribution.
The outcomes cannot be whole numbers in the hyper geometric distribution.


Question # 3 of 10 ( Start time: 10:57:59 PM ) Total Marks: 1
We can apply binomial distribution formula, when we are drawing a sample from finite population without replacement and the sample size “n” is not more than ……..% of the population size N.
Select correct option:
10%
8%
5%
1%


Question # 4 of 10 ( Start time: 10:57:59 PM ) Total Marks: 1
Two independent variables have bivariate distribution, then E(X.Y) =
Select correct option:
X.E(Y)
E(X).E(Y)
Y.E(X)
X.Y


Question # 5 of 10 ( Start time: 10:57:59 PM ) Total Marks: 1
Density function of normal distribution attains its maximum value when the value of random variable X is:
Select correct option:
X = Mean
X = Standard Deviation
X = Variance
All above


Question # 6 of 10 ( Start time: 10:59:56 PM ) Total Marks: 1
In statistics, the term ‘expected value’ implies the _____ value.
Select correct option:
Independent
Normal
Standard
Mean


Question # 7 of 10 ( Start time: 11:00:59 PM ) Total Marks: 1
If E(x) = 3 then E(4X+3)=.....:
Select correct option:
15
12
8
3


Question # 8 of 10 ( Start time: 11:01:48 PM ) Total Marks: 1
Which of the following is a characteristic of a binomial probability experiment?
Select correct option:
Each trial has more than two possible outcomes
P(success) = P(failure)
Probability of success changes for each trail
The result of one trial does not affect the probability of success on any other trial


Question # 9 of 10 ( Start time: 11:02:18 PM ) Total Marks: 1
In a bivariate probability distribution of X and Y, If f(0,1)=3/14, g(0)=5/14 and h(1)=3/7, then
Select correct option:
X and Y are statistically independent
X and Y are not statistically independent
Both of these
None of these


Question # 10 of 10 ( Start time: 11:03:33 PM ) Total Marks: 1
The mean of Uniform distribution defined on the interval [a,b] is:
Select correct option:
(a-b)/2
(a+b)/2
(a+b)
(a-b)