Probability (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 121  123 of 205
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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 

Question number: 123
» Probability » Probability Distributions » Random Vectors
Question
What is the distribution function of a random variable which have following density function?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 
