Chapter 2: Probability Concepts and...
True or False

1 .       The use of "expert opinion" is one way to approximate subjective probability values. [Hint]

 
 


2 .       If we have a single deck of cards, the probability of drawing a spade which is also an Ace is 1/52. [Hint]

 
 


3 .       If two events are mutually exclusive, the probability of both events occurring is simply the sum of the individual probabilities. [Hint]

 
 


4 .       If we have a single deck of cards, the drawing of a spade and a club are considered collectively exhaustive events. [Hint]

 
 


5 .       If we have a single deck of cards, we should view the drawing first of a Three (3) of Spades, and second, of a Four (4) of Diamonds, as mutually exclusive events. [Hint]

 
 


6 .       If two events are termed statistically independent, this implies that the two events cannot occur simultaneously. [Hint]

 
 


7 .       Assume we are tossing a two-headed coin. After tossing the coin 10,000 times, each time resulting in a "head," the probability that the next toss will result in a "head" is 0.5. [Hint]

 
 


8 .       If a bucket has three black balls and seven green balls, and we draw balls without replacement, the probability of drawing a green ball is independent of the number of balls previously drawn. [Hint]

 
 


9 .       Bayes' rule enables us to calculate the probability that one event takes place knowing that a second event has or has not taken place. [Hint]

 
 


10 .       Assume that you have an urn containing 10 balls of the following description:

4 are white (W) and lettered (L)
2 are white (W) and numbered (N)
3 are yellow (Y) and lettered (L)
1 is yellow (Y) and numbered (N)

If you draw a numbered ball (N), the probability that this ball is white (W) is 0.667. [Hint]

 
 






Copyright © 1995-2010, Pearson Education, Inc., publishing as Pearson Prentice Hall Legal and Privacy Terms