INSTRUCTOR’S SOLUTION
MANUAL
Probability & Statistics for Engineers & Scientists, 8th edition
By Ronald E. Walpole, Raymond H. Myers
LU
XE
LI
BR
AR
Y
, TABLE OF CONTENT
1 Introduction to Statistics and Data Analysis
2 Probability
3 Random Variables and Probability Distributions
4 Mathematical Expectation
5 Some Discrete Probability Distributions
6 Some Continuous Probability Distributions
7 Functions of Random Variables
LU
8 Fundamental Sampling Distributions and Data Descriptions
9 One- and Two-Sample Estimation Problems
10 One- and Two-Sample Tests of Hypotheses
XE
11 Simple Linear Regression and Correlation
12 Multiple Linear Regression and Certain Nonlinear Regression Models
13 One-Factor Experiments: General
LI
14 Factorial Experiments (Two or More Factors)
15 2k Factorial Experiments and Fractions
16 Nonparametric Statistics
BR
17 Statistical Quality Control
18 Bayesian Statistics
AR
Y
,Chapter 1
Introduction to Statistics and Data
Analysis
LU
1.1 (a) 15.
(b) x̄ = 1 (3.4 +
15
2.5 + 4.8 + · · · + 4.8) = 3.787.
XE
(c) Sample median is the 8th value, after the data is sorted from smallest to largest:
3.6.
(d) A dot plot is shown below.
LI
2.5 3.0 3.5 4.0 4.5 5.0 5.5
(e) After trimming total 40% of the data (20% highest and 20% lowest), the data
BR
becomes:
2.9 3.0 3.3 3.4 3.6
3.7 4.0 4.4 4.8
So. the trimmed mean is
1
x̄ tr20 = (2.9 + 3.0 + · · · + 4.8) = 3.678.
AR
9
1.2 (a) Mean=20.768 and Median=20.610.
(b) x̄ tr10 = 20.743.
(c) A dot plot is shown below.
Y
18 19 20 21 22 23
1
, LU
XE
LI
BR
AR
Y
MANUAL
Probability & Statistics for Engineers & Scientists, 8th edition
By Ronald E. Walpole, Raymond H. Myers
LU
XE
LI
BR
AR
Y
, TABLE OF CONTENT
1 Introduction to Statistics and Data Analysis
2 Probability
3 Random Variables and Probability Distributions
4 Mathematical Expectation
5 Some Discrete Probability Distributions
6 Some Continuous Probability Distributions
7 Functions of Random Variables
LU
8 Fundamental Sampling Distributions and Data Descriptions
9 One- and Two-Sample Estimation Problems
10 One- and Two-Sample Tests of Hypotheses
XE
11 Simple Linear Regression and Correlation
12 Multiple Linear Regression and Certain Nonlinear Regression Models
13 One-Factor Experiments: General
LI
14 Factorial Experiments (Two or More Factors)
15 2k Factorial Experiments and Fractions
16 Nonparametric Statistics
BR
17 Statistical Quality Control
18 Bayesian Statistics
AR
Y
,Chapter 1
Introduction to Statistics and Data
Analysis
LU
1.1 (a) 15.
(b) x̄ = 1 (3.4 +
15
2.5 + 4.8 + · · · + 4.8) = 3.787.
XE
(c) Sample median is the 8th value, after the data is sorted from smallest to largest:
3.6.
(d) A dot plot is shown below.
LI
2.5 3.0 3.5 4.0 4.5 5.0 5.5
(e) After trimming total 40% of the data (20% highest and 20% lowest), the data
BR
becomes:
2.9 3.0 3.3 3.4 3.6
3.7 4.0 4.4 4.8
So. the trimmed mean is
1
x̄ tr20 = (2.9 + 3.0 + · · · + 4.8) = 3.678.
AR
9
1.2 (a) Mean=20.768 and Median=20.610.
(b) x̄ tr10 = 20.743.
(c) A dot plot is shown below.
Y
18 19 20 21 22 23
1
, LU
XE
LI
BR
AR
Y
