**[tippy title=”Problems 1-4″]Problems 1-4**

There are many problems throughout the text labeled IN YOUR OWN WORDS. Just relax; do not be afraid to give your opinion. For the most part, these questions do not have “right” or “wrong” answers. You should spend about five minutes in answering each of these questions.[/tippy]

**[tippy title=”Problems 5-10″]Problems 5-10**

See Example 1.[/tippy]

**[tippy title=”Problems 11-22″]Problems 11-22**

Use Table 14.9 and symmetry to find the* z* value.[/tippy]

**[tippy title=”Problems 23-24″]Problems 23-24**

See Example 2.[/tippy]

**[tippy title=”Problem 25″]Problem 25**

The standard deviation of a normal distribution is the standard deviation, the number sigma. From the last section, we find know the variance is the square of the standard deviation.[/tippy]

**[tippy title=”Problem 26″]Problem 26**

A cumulative frequency is the sum of all preceding frequencies in which some order has been established. See Example 1.[/tippy]

**[tippy title=”Problems 27-28″]Problem 27-28**

See Example 3.[/tippy]

**[tippy title=”Problem 29″]Problem 29**

The variance is the square of the mean.[/tippy]

**[tippy title=”Problem 30″]Problem 30**

A cumulative frequency is the sum of all preceding frequencies in which some order has been established. See Example 1.[/tippy]

**[tippy title=”Problems 31-34″]Problems 31-34**

These problems give you some practice in identifying distributions. See Example 6.[/tippy]

**[tippy title=”Problems 35-38″]Problems 35-38**

See Example 3.[/tippy]

**[tippy title=”Problem 39″]Problem 39**

See Example 1.[/tippy]

**[tippy title=”Problems 40-41″]Problems 40-41**

These problems are included to test your understanding of the term skewed distribution.[/tippy]

**[tippy title=”Problems 42-45″]Problems 42-45**

See Example 4.[/tippy]

**[tippy title=”Problem 46″]Problem 46**

Use Table 14.9 and Example 4.[/tippy]

**[tippy title=”Problems 47-48″]Problems 47-48**

See Example 2.[/tippy]

**[tippy title=”Problem 49″]Problem 49**

Use Table 14.9 and Example 4.[/tippy]

**[tippy title=”Problem 50″]Problem 50**

See Example 2.[/tippy]

**[tippy title=”Problems 51-52″]Problems 51-52**

The standard deviation is the square root of the variance; see Example 2.[/tippy]

**[tippy title=”Problem 53″]Problem 53**

Use Table 14.9 and Example 4.[/tippy]

**[tippy title=”Problem 54″]Problem 54**

See Example 3; the shirt sizes are the same as “grades.”[/tippy]

**[tippy title=”Problems 55-56″]Problems 55-56**

See Example 2.[/tippy]

### Note: Homework Hints are given only for the Level 1 and Level 2 problems.[/tippy]

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 problems, check some sources for help on the internet (see the LINKS for that particular section. As a last resort, you can call the author at (707) 829-0606.

On the other hand, the problems designated “Problem Solving” generally require techniques that do not have textbook examples.

There are many sources for homework help on the internet.

**Algebra.help**

Here is a site where technology meets mathematics. You can search a particular topic or choose lessons, calculators, worksheets for extra practice or other resources.

http://www.algebrahelp.com/

**Ask Dr. Math**

Dr. Math is a registered trademark. This is an excellent site at which you can search to see if your question has been previously asked, or you can send your question directly to Dr. Math to receive an answer.

http://mathforum.org/dr.math/

**Quick Math**

This site provides online graphing calculators. This is especially useful if you do not have your own calculator.

http://www.quickmath.com/

**The Math Forum @ Drexel**

This site provides an internet mathematics library that can help if you need extra help. For additional homework help at this site, click one of the links in the right-hand column.

http://mathforum.org/