I understood less about probability after reading the first few chapters of this book than before reading it. The wording is extremely vague because the author tries too hard to generalize, using abstract terms such as n, r, x, etc to describe everything and leaving you to decide for yourself which part of the problem these variables apply to in the practice problems (less than half of which have solutions, none of which are comprehensive). Thank goodness for Google and good free math help sites. The biggest problem with this book is the lack of explanations for the practice problems which differ from the examples and are much harder. The hardest practice problems are marked with asterisks but sadly even these are not explained. This is the second Statistics course I've taken and I feel as if this book is confusing everything I learned in the first one. If this book weren't required for class I'd burn it.

If you have to have this particular book for a class, then you have no choice. But, if you don't, this book has a lot of problems with very little help in solving them, unless you obtain a solution manual.