ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 239  243 of 469
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Question number: 239
» Probability » Probability Distributions » Multinomial
Question
Which of the following statement is/are incorrect regarding Multinomial experiment?
Choices
Choice (4)  Response  

a.  There are fixed number of repeated trails. 

b.  Every trial has a fix possible number of outcomes. 

c.  The trials are dependent on each other. 

d.  Question does not provide sufficient data or is vague 

Question number: 240
» Probability » Conditional Probability
Question
Your neighbor has 2 children. You learn that he has a son, Rahul. What is the probability that Rahul’s sibling is a brother?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 241
» Probability » Probability Distributions » Poisson
Question
If water supply failures occur according to a Poisson distribution with an average of 5 failures every ten weeks, calculate the probability that there will not be more than one failure during a particular week
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 242
» Probability » Probability Distributions » Uniform
Question
The amount of time, in minutes, that a person must wait for a bus is uniformly distribute between 5 and 20 minutes, inclusive. On the average, how long must person wait?
Choices
Choice (4)  Response  

a.  7.5 minutes 

b.  12.5 minutes 

c.  10 minutes 

d.  None of the above 

Question number: 243
» Probability » Probability Distributions » Exponential
Question
Suppose that the lifetime of a bulb is modeled by an exponential distribution with (unknown) parameter λ. We test 5 bulbs and find they have lifetimes of 2, 3, 1, 3, and 4 years, respectively. What is the MLE for λ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 
