ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 228  232 of 472
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Question number: 228
» Probability » Law of Total Probability
Question
We roll a four sided die. If the result is 1 or 2, we roll once more but otherwise we stop. What is the probability that the sum total of our rolls is at least 4?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 229
» Probability » Probability Distributions » Poisson
Question
Which of the following situation/situations can be analyzed using Poission distribution?
Choices
Choice (4)  Response  

a.  Birth defects and genetic mutations 

b.  Spread of an endangered animal in Africa 

c.  Number of typing errors on a page 

d.  All a. , b. and c. are correct 

Question number: 230
» Probability » Bayes' Theorem and Applications
Question
A is known to tell the truth in 3 cases out of 8 and he states that a white ball was drawn from a bag containing 6 blacks and 2 white ball. Find the probability that the white ball was drawn.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 

Question number: 231
» Probability » Probability Distributions » Multinomial
Question
Which of the following statement is/are incorrect regarding Multinomial experiment?
Choices
Choice (4)  Response  

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

b.  There are fixed number of repeated trails. 

c.  The trials are dependent on each other. 

d.  All of the above 

Question number: 232
» 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.  Question does not provide sufficient data or is vague 
