ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 290  294 of 471
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Question number: 290
» Probability » Probability Distributions » Hypergeometric
Question
An urn contain 20 balls out of which 8 are black and 12 are white. 5 balls are selected without replacement, then what is the probability that exactly 2 balls are white balls?
Choices
Choice (4)  Response  

a.  0.238 

b.  0.636 

c.  0.827 

d.  0.542 

Question number: 291
» Probability » Probability Distributions » Geometric
Question
If geometric distribution, then will have ________.
Choices
Choice (4)  Response  

a.  Uncountable and possibly infinite number of possible values. 

b.  Uncountable number of possible values. 

c.  Countable but possibly infinite number of possible values. 

d.  Countable possibly finite number of possible values. 

Question number: 292
» Probability » Probability Distributions » Cauchy
Question
The Student distribution with one degree of freedom has PDF________.
Choices
Choice (4)  Response  

a. 


b.  Standard Cauchy distribution 

c.  Question does not provide sufficient data or is vague 

d.  All of the above 

Question number: 293
» Probability » Conditional Probability
Question
Suppose that five good bulbs and two defective ones have been mixed up. To find the defective bulbs, we test them onebyone, at random and without replacement. What is the probability that we are lucky and find both of the defective fuses in the first two tests?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 

Question number: 294
» Probability » Probability Distributions » Hypergeometric
Question
A box contain 2000 items of which are defective. Find the probability that 2 defectives will be obtained in a sample of size 10 without replacement.
Choices
Choice (4)  Response  

a.  0.347 

b.  0.193 

c.  0.388 

d.  0.923 
