ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 204  209 of 472
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 472 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 300.00 or
How to register?
Question number: 204
» 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: 205
» 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: 206
» Probability » Probability Distributions » Uniform
Question
If , then what will be the standard deviation of ?
Choices
Choice (4)  Response  

a.  261.2 

b.  59.8 

c.  120.5 

d.  161.4 

Question number: 207
» 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: 208
» 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.  All of the above 

Question number: 209
» Probability » Probability Distributions » Normal
Question
Suppose marks of students in a test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a student who gives the test will score between 90 and 110?
Choices
Choice (4)  Response  

a.  0.84 

b.  0.68 

c.  0.16 

d.  All of the above 
