Chapter 5:
Ex 4) A large company must hire a new president. The Board of
Directors prepares a list of five candidates, all of whom are equally
qualified. Two of these candidates are members of a minority group.
To avoid bias in the selection of the candidate, the company decides
to select the president by lottery.
a.
What is the probability one of the minority candidate is hired?
b.
Which concept of probability did you use to make this
estimate?
Ex 14) The chair of the board of directors says, “ There is a 50%
chance this company will earn a profit, a 30% chance it will break
even, and a 20% chance it will lose money next quarter”:
a.
Use an addition rule to find the probability the company will
not lose money next quarter
b.
Use the complement rule to find the probability it will not lose
money next quarter.
EX 22 ) A National Park Service survey of visitors to the Rocky
Mountain region revealed that 50% visit Yellowstone park, 40% visit
the Tetons, and 35% visit both.
a)
What is the probability a vacationer will visit at least one of
these attractions?
b) What is the probability .35 called?
c) Are the events mutually exclusive?
Ex 40) Value : 10.00 Points
Solve the following:
a) 20!/17!
b) 9P3
c) 7C2