Solutions to End-of-Section and Chapter Review Problems
CHAPTER 2
2.1
(a)
Category
A
B
C
Frequency
13
28
9
(b)
The Bar Chart
A
Percentage
26%
56
18
26%
B
56%
C
18%
0%
10%
20%
30%
40%
Percentage of Category
(c)
The Pie Chart
C
18%
A
26%
B
56%
50%
60%
117
1
596
Chapter 13: Simple Linear Regression
CHAPTER 13
(a)
(b)
When X = 0, the estimated expected value of Y is 2.
For each increase in the value X by 1 unit, you can expect an increase by an estimated
5 units in the value of Y.
(c)
Y = 2 + 5 X = 2 + 5(3) =
362
Chapter 9: Fundamentals of Hypothesis Testing: One-Sample Tests
CHAPTER 9
9.1
H0 is used to denote the null hypothesis.
9.2
H1 is used to denote the alternative hypothesis.
9.3
is used to denote the significance level, or the chance of committing a T
Solutions to End-of-Section and Chapter Review Problems
637
CHAPTER 14
14.1
(a)
(b)
14.2
(a)
(b)
14.3
14.4
(a)
(b)
(a)
(b)
(c)
Holding constant the effect of X2, for each increase of one unit in X1, the response
variable Y is estimated to increase an aver