Solution Manual For Probability and Statistics for
Engineers and Scientists, Updated 9th Edition by Ronald
Walpole All Chapters Covered Latest Version
2|Page
,Contents
1 Introduction to Statistics and Data Analysis 1
2 Probability 11
3 Random Variables and Probability Distributions 29
4 Mathematical Expectation 45
5 Some Discrete Probability Distributions 59
6 Some Continuous Probability Distributions 71
7 Functions of Random Variables 85
8 Fundamental Sampling Distributions and Data Descriptions 91
9 One- and Two-Sample Estimation Problems 103
10 One- and Two-Sample Tests of Hypotheses 121
11 Simple Linear Regression and Correlation 149
12 Multiple Linear Regression and Certain Nonlinear Regression Models 171
13 One-Factor Experiments: General 185
14 Factorial Experiments (Two or More Factors) 213
15 2k Factorial Experiments and Fractions 237
16 Nonparametric Statistics 257
iii
, iv CONTENTS
17 Statistical Quality Control 273
18 Bayesian Statistics 277
4|Page
, Chapter 1
Introduction to Statistics and Data
Analysis
1.1 (a) 15.
(b) x̄ = 1 (3.4 + 2.5 + 4.8 + · · · + 4.8) = 3.787.
15
(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.
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
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
x̄tr 2 0 = (2.9 + 3.0 + · · · + 4.8) = 3.678.
9
1.2 (a) Mean=20.768 and Median=20.610.
(b) x̄ tr 10 = 20.743.
(c) A dot plot is shown below.
18 19 20 21 22 23
1
Engineers and Scientists, Updated 9th Edition by Ronald
Walpole All Chapters Covered Latest Version
2|Page
,Contents
1 Introduction to Statistics and Data Analysis 1
2 Probability 11
3 Random Variables and Probability Distributions 29
4 Mathematical Expectation 45
5 Some Discrete Probability Distributions 59
6 Some Continuous Probability Distributions 71
7 Functions of Random Variables 85
8 Fundamental Sampling Distributions and Data Descriptions 91
9 One- and Two-Sample Estimation Problems 103
10 One- and Two-Sample Tests of Hypotheses 121
11 Simple Linear Regression and Correlation 149
12 Multiple Linear Regression and Certain Nonlinear Regression Models 171
13 One-Factor Experiments: General 185
14 Factorial Experiments (Two or More Factors) 213
15 2k Factorial Experiments and Fractions 237
16 Nonparametric Statistics 257
iii
, iv CONTENTS
17 Statistical Quality Control 273
18 Bayesian Statistics 277
4|Page
, Chapter 1
Introduction to Statistics and Data
Analysis
1.1 (a) 15.
(b) x̄ = 1 (3.4 + 2.5 + 4.8 + · · · + 4.8) = 3.787.
15
(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.
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
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
x̄tr 2 0 = (2.9 + 3.0 + · · · + 4.8) = 3.678.
9
1.2 (a) Mean=20.768 and Median=20.610.
(b) x̄ tr 10 = 20.743.
(c) A dot plot is shown below.
18 19 20 21 22 23
1
