ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 231  235 of 461
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Question number: 231
» 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.  All of the above 

Question number: 232
» 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: 233
» 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: 234
» 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: 235
» 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 
