The Nature of Mathematics, 12th Edition
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Section 14.3 Homework Hints

    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.
    Problems 5-6
    These problems are included to test your understanding of the terms skewed distribution and z-score.
    Problems 7-12
    See Example 1.
    Problems 25-26
    See Example 2.
    Problem 27
    The variance is the square of the mean.
    Problem 28
    The standard deviation of a normal distribution is the standard deviation, the number sigma. From the last section, we find that the variance is the square of the standard deviation.
    Problem 29
    A cumulative frequency is the sum of all preceding frequencies in which some order has been established. See Example 1.
    Problem 30-32
    See Example 3.
    Problem 33
    The variance is the square of the mean.
    Problem 34
    A cumulative frequency is the sum of all preceding frequencies in which some order has been established. See Example 1.
    Problems 35-38
    See Example 3.
    Problem 39
    See Example 1.
    Problems 40-41
    These problems are included to test your understanding of the term skewed distribution.
    Problems 42-45
    See Example 4.
    Problem 46
    Use Table 14.9 and Example 4.
    Problems 47-48
    See Example 2.
    Problem 49

    Use Table 14.9 and Example 4.
    Problem 50

    See Example 2.
    Problems 51-52

    The standard deviation is the square root of the variance; see Example 2.
    Problem 53

    Use Table 14.9 and Example 4.
    Problem 54

    See Example 3; the shirt sizes are the same as "grades."
    Problems 55-56

    See Example 2.

    Note: Homework Hints are given only for the Level 1 and Level 2 problems.

    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/

    Mathematics Home Page
    Access the Clemens and Alcuins Library of CSB/SJU and find one of the world's best collections of mathematical internet sites.
    http://library.csbsju.edu/rqs.phtml?subject_id=32

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