ISS Statistics Paper I (New 2016 MCQ Pattern): Questions 257  260 of 458
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Question number: 257
» Probability » Probability Distributions » Laplace
Question
The characteristic function of standard Laplace distribution is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 258
» Probability » Probability Distributions » Negative Binomial
Question
Suppose that and are independent random variables for an experiment, and that Negative Binomial distribution and Negative Binomial distribution . Then
Choices
Choice (4)  Response  

a.  Binomial distribution 

b.  Negative Binomial distribution 

c.  Negative Binomial distribution 

d.  None of the above 

Question number: 259
» Probability » Probability Distributions » Cauchy
Question
Which of the following statement is correct regarding the pdf of standard Cauchy distribution?
Choices
Choice (4)  Response  

a.  It increases and then decreases, with mean . 

b.  It is concave upward, then downward, and then upward again, with inflection points at . 

c.  It is symmetric about its mean. 

d.  None of the above 

Question number: 260
» Probability » Probability Distributions » Normal
Question
If are i. i. d with standard normal distributions, the value of so that the random variable has a tdistribution is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 
