CHAPTER 3
Section 3.1
1. S: X: FFF 0 SFF 1 FSF 1 FFS 1 FSS 2 SFS 2 SSF 2 SSS 3
2.
X = 1 if a randomly selected book is non-fiction and X = 0 otherwise X = 1 if a randomly selected executive is a female and X = 0 otherwise X = 1 if a randomly select
CHAPTER 7
Section 7.1
1. a.
level is 100(1 - )% = 99.5% . b. c.
z 2 = 2.81 implies that
2
= 1 - (2.81) = .0025 , so = .005 and the confidence
z 2 = 1.44 for = 2[1 - (1.44 )] = .15 , and 100(1 - )% = 85% .
99.7% implies that
= .003 , 2
Chapter 1: Overview and Descriptive Statistics
CHAPTER 1
Section 1.1
1. a. Houston Chronicle, Des Moines Register, Chicago Tribune, Washington Post
b. Capital One, Campbell Soup, Merrill Lynch, Pulitzer c. Bill Jasper, Kay Reinke, Helen Ford, David
CHAPTER 2
Section 2.1
1.
a. S = { 1324, 1342, 1423, 1432, 2314, 2341, 2413, 2431, 3124, 3142, 4123, 4132, 3214, 3241, 4213, 4231 }
b. Event A contains the outcomes where 1 is first in the list: A = { 1324, 1342, 1423, 1432 } c. Event B contains the
CHAPTER 5
Section 5.1
1. a. P(X = 1, Y = 1) = p(1,1) = .20 b. P(X 1 and Y 1) = p(0,0) + p(0,1) + p(1,0) + p(1,1) = .42 c. At least one hose is in use at both islands. P(X 0 and Y 0) = p(1,1) + p(1,2) + p(2,1) + p(2,2) = .70
d. By summing row pro