Unit 4 Chapter 8 Probability And Statistics Worksheet Page 8
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46HISTORY
For Exercises 24–26, use the table at the right and
U.S. Population (thousands)
the information below.
Region
1890
2000
The U.S. Census Bureau divides the United States into four
Northeast
17,407
53,594
regions: Northeast, Midwest, South, and West.
Midwest
22,410
64,393
Suppose a person living in the United States in 1890 was picked
24.
South
20,028
100,237
at random. What is the probability that the person lived in the
West
3,134
63,198
West? Write as a decimal to the nearest thousandth.
Source: U.S. Census Bureau
Source: U.S. Census Bureau
Suppose a person living in the United States in 2000 was
25.
picked at random. What is the probability that the person
lived in the West? Write as a decimal to the nearest thousandth.
How has the population of the West changed?
26.
CRITICAL THINKING
A box contains 5 red, 6 blue, 3 green, and
27.
2 yellow crayons. How many red crayons must be added to the
2
box so that the probability of randomly picking a red crayon is
?
3
EXTENDING THE LESSON
The odds of an event occurring is a ratio that
compares the number of favorable outcomes to the number of unfavorable
outcomes. Suppose a number cube is rolled.
Find the odds of each outcome.
a 6
not a 6
an even number
28.
29.
30.
NEW YORK
Test Practice
For Exercises 31 and 32, the following cards are put into a box.
2
6
7
5
8
9
8
4
MULTIPLE CHOICE
Emma picks a card at random. The number on the
31.
card will most likely be
a number greater than 6.
a number less than 6.
A
B
an even number.
an odd number.
C
D
MULTIPLE CHOICE
What is the probability of not getting an 8?
32.
25%
30%
50%
75%
F
G
H
I
Analyze each measurement. Give the precision, significant digits if
appropriate, greatest possible error, and relative error to two significant
digits.
(Lesson 7-9)
8 cm
0.36 kg
4.83 m
410 cm
33.
34.
35.
36.
GEOMETRY
Find the surface area of a cone with radius of 5 inches and
37.
slant height of 12 inches.
(Lesson 7-8)
BASIC SKILL
Multiply.
5 6 2
5 5 8
12 5 3
7 8 2
38.
39.
40.
41.
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Lesson 8-1 Probability of Simple Events
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