ProbabilityConditional Probability (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 1  4 of 5
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Question number: 1
» Probability » Conditional Probability
Question
In describing the survival rate and life expectancy in a certain population, let denote the event of reaching the age of years and be the corresponding probability. If then, what is the probability that a 50 years old will die within 5 years?
Choices
Choice (4)  Response  

a.  0.253 

b. 


c.  0.965 

d.  Question does not provide sufficient data or is vague 

Question number: 2
» Probability » Conditional Probability
Question
Four cards are drawn in succession without replacement from a standard deck. At each draw, all the remaining cards in the deck are equally likely. What is the probability of the color sequence redredblackred?
Choices
Choice (4)  Response  

a.  0.0624 

b.  0.6245 

c.  0.0526 

d.  None of the above 

Question number: 3
» 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: 4
» Probability » Conditional Probability
Question
Consider the college applicant who has determined that he has 0.80 probability of acceptance and that only 60 % of the accepted students will receive dormitory housing. Of the accepted students who receive dormitory housing, 80 % will have at least one roommate. What is the probability of being accepted and receiving dormitory housing and having no roommates?
Choices
Choice (4)  Response  

a.  0.088 

b.  0.096 

c.  0.085 

d.  0.074 
