Math 13800
Exam 2
Spring 2010
1
For #1-3, CIRCLE THE LETTER OF THE CORRECT ANSWER.
(7 pts)1.
Find a function rule for the number of toothpicks to make Shape
n
in the following pattern:
Shape 1
Shape 2
Shape 3
. 3
4
. 4
4
. 4
3
. 3
3
.
None of the above
A
n
B
n
C
n
D
n
E
(7 pts)2. On Elm Street, there are 27 houses of which 8 do not have a garage. Morgan lives on Elm Street.
Determine the odds in favor of Morgan living in a house that has a garage.
. 8:19
.19: 27
. 8: 27
. 27:35
. 19:8
A
B
C
D
E
(7 pts)3. Of these three statements, which are referring to a population parameter?
I.
In Mr. Hobson’s fifth-grade class, cats are the favorite pet of 55% of the students.
II. The newspaper surveyed voters in the city of Chicago and found that 48% are opposed to the
school funding proposal.
III. The average GPA of all current members of a certain sorority is 3.24.
.
II only
.
III only
.
I and II only
.
I and III only
.
II and III only
A
B
C
D
E

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