Chapter 5 (Examples)
Three cards are drawn with replacement from a standard deck. What is
the probability that the first card will be a club, the second card will be a
red card, and the third card will be a 6 of hearts?
Suppose you like to keep a jar of change in your desk. The jar currently
contains
30 Pennies
9 Dimes
9 Nickels
21 Quarters
What is the probability that you reach into the jar and randomly grab a
quarter and then without replacement a nickel?
A hospital has two ambulances. Because an ambulance can be out on a
call or have a mechanical breakdown, the probability that a specific
ambulance will be available when needed is 0.9. If an ambulance is
needed in an emergency, what is the probability that at least one will be
available?
An independent oildrilling company drills wildcat oil wells. So far,
60% of the wells have been oilproducing and 40% have been dry. A
private investor wishes to go into partnership with the oil company in
two wells. What is the probability that at least one of the two oil wells in
the partnership will produce oil?
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A box contains 11 large marbles and 16 small marbles. Each marble is
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 Spring '08
 Hossain
 Probability, 5%, Randomness, 3%, 40%

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