Chapter 9 Probability Worksheet Page 28
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48EXTRA
See pages 692, 712.
For Exercises 3–6, use the act it out strategy.
TRANSPORTATION
TESTS
There are 4 students
Determine whether using a spinner
8.
3.
waiting at a subway stop. How many
with four equal sections is a good way to
different ways can they board the subway?
answer a 5-question multiple-choice quiz if
each question has choices A, B, C, and D.
ALGEBRA
The pattern below is known as
9.
Justify your answer.
Pascal’s Triangle. Would 1, 6, 10, 10, 6, 1 be
BOOKS
There are 6 students in a book club.
a reasonable conjecture for the numbers in
4.
Two of them order books, and the delivery
the 6th row? Justify your answer.
comes to the classroom teacher. However, the
teacher cannot remember which 2 students
ordered the books. Is it a good idea for the
teacher to randomly pass out the books to
any two students? Explain. What is the
probability that the teacher will give the
correct books to the students?
RUNNING
Six runners are entered in a race.
5.
Assuming no ties, in how many different
ways can first and second places be awarded?
CHESS
A chess tournament is held, and 32
10.
MOVIES
In how many different ways can
6.
students participate. The tournament will be
four friends sit in a row of four seats at the
single-elimination, which means if a player
movies if two of the friends insist on sitting
loses one match, he or she will be eliminated.
next to each other?
How many total games will be played in the
Use any strategy to solve Exercises 7–14.
tournament?
Some strategies are shown below.
SCHOOL
Suppose rolling an even number on a
11.
number cube corresponds to an answer of true
and rolling an odd number corresponds to an
answer of false. Determine whether rolling
this number cube is a good way to answer a
5-question true-false quiz. Justify your answer.
CABLE
A cable company is running a special
12.
FESTIVALS
The Student Council will have a
7.
for new customers. For the first 3 months
booth set up at the town festival. They
they will get a discount of 20% off their
surveyed 160 students to find out their
regular bill. Would $50, $60, or $70 be a
preference for the booth. The results are
reasonable estimate for the first bill if their
shown below. Is 35, 65, or 95 a reasonable
regular bill is $95? Explain.
answer for the number of students who
MONEY
If you save $1.25 every week in a
13.
would prefer a dunking booth? Explain.
piggy bank, how much money will you
have after 3 years?
MUSIC
Liseta has an equal number of jazz,
14.
country, rap, pop, and R&B songs on her
MP3 player. She listens to her MP3 player
on random mode on both Wednesday and
Thursday nights. What is the probability
Liseta will hear a rap song first on
Wednesday night?
485
Lesson 9-6 Problem-Solving Investigation: Act It Out
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