Probability (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 120  122 of 205
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Question number: 120
» Probability » Probability Distributions » Conditional Distributions
Question
A continuous random vector have joint probability distribution function
What is the mean of conditional density of given ?
Choices
Choice (4)  Response  

a. 


b. 


c.  x 

d.  None of the above 

Question number: 121
» Probability » Probability Distributions » Gamma
Question
Suppose that a bullet is fired at a target at the origin of a plane coordinate system, with units in meters. The bullet lands at where and are independent and each has the normal distribution with mean 0 and variance 100. The bullet will destroy the target if it lands within 20 meters of the target. Find the probability of this event.
Choices
Choice (4)  Response  

a.  0.8647 

b. 


c. 


d.  None of the above 

Question number: 122
» Probability » Probability Distributions » Lognormal
Question
Using the method of moment estimation, find the estimators and of parameters of if .
Choices
Choice (4)  Response  

a.  and 

b.  and 

c.  and 

d.  All of the above 
