Statistics
&
Probability

Test
#3
(Chapters 1416
+
Supplement)
Show
All
Work!!!
1.
(5 pts.)
An urn contains six balls numbered 16, otherwise identical. The random experiment consists of
selecting five balls without replacement. Write out the sample space for this experiment. (You may use
1 to represent the ball with the
1
on it,
2
to represent the ball with the
2
on it, etc.)
2.
(5pts.l
If
the probability that it rains tomorrow is 0.8, what is the probability it won't rain tomorrow?
3.
(5
p~)
A person shoots two arrows, in succession, at a target. The probability that she hits the bull'seye
on the first shot is 0.8. The chance she hits the bull'seye on the second shot is 0.7. The chance she hits
the bull'seye on both the first shot and the second shot is 0.6, what is the probability that she hits the
bull'seye either on the first or the second time (or both)?
4.
(lo pts.)
There are 10 people at a dinner party.
7
are teachers and
3
are doctors.
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 Spring '08
 TBA
 Statistics, Probability, Mike winSw

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