This book is in two volumes, and is intended as a text for introductory
courses in probability and statistics at the second or third year
university level. It emphasizes applications and logical principles
rather than math- ematical theory. A good background in freshman
calculus is sufficient for most of the material presented. Several
starred sections have been included as supplementary material. Nearly
900 problems and exercises of varying difficulty are given, and Appendix
A contains answers to about one-third of them. The first volume
(Chapters 1-8) deals with probability models and with mathematical
methods for describing and manipulating them. It is similar in content
and organization to the 1979 edition. Some sections have been rewritten
and expanded-for example, the discussions of independent random
variables and conditional probability. Many new exercises have been
added. In the second volume (Chapters 9-16), probability models are used
as the basis for the analysis and interpretation of data. This material
has been revised extensively. Chapters 9 and 10 describe the use of the
like- lihood function in estimation problems, as in the 1979 edition.
Chapter 11 then discusses frequency properties of estimation procedures,
and in- troduces coverage probability and confidence intervals. Chapter
12 de- scribes tests of significance, with applications primarily to
frequency data.