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Three contractors (call them contractors 1, 2, and 3)
bid on a project to build a new bridge. What is the
sample space?
6.10 Refer to Exercise 6.9. Suppose that you believe that
contractor 1 is twice as likely to win as contractor 3
and that contractor 2 is three times as likely to win
as contactor 3. What are the probabilities of winning
for each contractor?
6.11 Shoppers can pay for their purchases with cash, a
credit card, or a debit card. Suppose that the proprietor
of a shop determines that 60% of her customers
use a credit card, 30% pay with cash, and the
rest use a debit card.
a. Determine the sample space for this experiment.
b. Assign probabilities to the simple events.
c. Which method did you use in part (b)?
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