ProbabilityDiscrete and Continuous Random Variables (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 1  5 of 5
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Question number: 1
» Probability » Discrete and Continuous Random Variables
Question
Which of the following cannot be the example of exponential random variable?
Choices
Choice (4)  Response  

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

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

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

d.  All of the above 

Question number: 2
» 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.  Continuous 

b.  Can’t say anything. 

c.  Discrete 

d.  Sometime discrete sometime continuous 

Question number: 3
» Probability » Discrete and Continuous Random Variables
Question
Z is the distance traveled by a randomly chosen business consultant last year. Is the random variable Z discrete or continuous?
Choices
Choice (4)  Response  

a.  Can’t say anything 

b.  Sometime discrete sometime continuous 

c.  Discrete 

d.  Continuous 

Question number: 4
» Probability » Discrete and Continuous Random Variables
Question
Z is the number of reading sessions a randomly chosen public library offers in their literacy program for kids. Is the random variable Z discrete or continuous?
Choices
Choice (4)  Response  

a.  Discrete 

b.  Continuous 

c.  Sometime discrete sometime continuous 

d.  Can’t say anything 

Question number: 5
» Probability » Discrete and Continuous Random Variables
Question
Which of the following statement is Incorrect regarding a random variable?
Choices
Choice (4)  Response  

a.  The volume of fuel consumed by a bus on its route is a continuous random variable. 

b.  A random variable can be discrete as well as continuous. 

c.  The height or weight of a randomly chosen individual from a population is a continuous random variable. 

d.  None of the above 
