Probability (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 5  9 of 199
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Question number: 5
» Probability » Discrete and Continuous Random Variables
Question
Which of the following cannot be the example of exponential random variable?
Choices
Choice (4)  Response  

a.  The distance we travel along a road until we find the next pothole. 

b.  Number of pizza a person eats in a month. 

c.  The time until the next jobs arrives at a database server. 

d.  All of the above 

Question number: 6
» Probability » Discrete and Continuous Random Variables
Question
A randomly chosen child repeatedly hits a bell. X is the length of time it takes to break it open. Is the random variable X discrete or continuous?
Choices
Choice (4)  Response  

a.  Discrete 

b.  Sometime discrete sometime continuous 

c.  Can’t say anything. 

d.  Continuous 

Question number: 7
» Probability » Probability Distributions » Uniform
Question
If , then what will be the standard deviation of ?
Choices
Choice (4)  Response  

a.  59.8 

b.  261.2 

c.  161.4 

d.  120.5 

Question number: 8
» Probability » Probability Distributions » Bernoulli
Question
Which of the following is skewness of a standardized Bernoulli distributed random variable which takes the value 1 with success probability of and the value 0 with failure probability of ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 9
» Probability » Probability Distributions » Exponential
Question
The moment generating function of an exponential random variable X with parameter λ (for t < 1/ λ) is:
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 
