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Probability Problems - Page 3


Probability Problems
  • Page 3
 21.  

In a certain small Indian Ocean island nation in May, 34% of the population comprised islanders working in the tourist industry and 26% were tourists. Of the tourists, 66% were Europeans of which a quarter were from the UK. News of a murder began reaching the authorities, but at first details were scant. Knowing nothing other than one person was murdered, what is the probability it was a tourist from the UK?



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 22.  

What is 'addition rule and sum rule for probability'?



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 23.  

What is the difference between an "event" in statistics and a sample space?



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 24.  

Of all he cars sold, 80% are not convertible, 40% are red, and 5% are red convertibles. If the car sold is a convertible, what is the probability it is red?



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 25.  

GIVEN P(A/B)=0.3;P(B)=0.6 AND P(A)=0.4, DETERMINE P(B AND A) ?



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 26.  

There are 3 urns containing 2 white and 3 black balls, 3 white and 2 black balls and 4 white and 1 black balls respectively. There is equal probability of each urn being chosen. One ball is drawn from an urn chosen at random. What is the probability that a white ball is drawn from second urn?



Answer: ()


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