## Areas in population distributions

Our course spends much more time in this chapter finding areas in normal distributions than in other distributions. It is crucial that you draw pictures of the areas you want and relate those pictures to the numbers you look up in a table or find with software.

It is also important to notice that one could find areas in distributions of other shapes as well. The textbook illustrates areas in a uniform distribution. You find those areas using ideas from geometry. Be sure to practice with that. In particular, be sure to notice that you must be told the shape (name) of the distribution in order to know how to find an area. DO NOT assume that any area you are asked to find is from a normal distribution, even though that is mostly what you are practicing.

Later in the course, we will learn to find areas in other distributions (such as the t, and chi-squared, and F distributions.)

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