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# **Introduction to hypothesis testing -- The z-test

This exercise will help the user understand the logic and procedures of hypothesis testing. To make best use of this exercise, the user should know how to use a z table to find probabilities on a normal distribution, and how to calculate the standard error of a mean. Relevant review materials are available from the links provided. The user will need a copy of the hypothesis testing exercise (link is provided), a table for the standardized normal distribution (z), and a calculator. The user will be asked several questions and will be given feedback regarding their answers. Detailed solutions are provided, but users should try to answer the questions on their own before consulting the detailed solutions. The end of the tutorial contains some "thought" questions.
Rating:
Author Name:
Dale Berger, Christopher Aberson, Michael Healy, Victoria Romero, Diana Kyle
Content Quality Concerns:
None.
Content Quality Strengths:
This activity does a nice job of guiding students through the hypothesis testing process. It also gives good hints to students when they make errors in their work. This instruction is at least as valuable as the instruction provided when students get the correct answer.
Ease of Use Concerns:
The applet opens embedded in the browser page, which keeps students from having both the worksheet and the applet open at the same time. Potential users should make sure that they instruct students to print this worksheet prior to moving forward. The presentation also implies that there may be more examples than there are, the actual focus of this tutorial is the applet simulation of the sampling distribution.
Ease of Use Strengths:
The applet is quite easy to use and navigate through.
Potential Effectiveness Concerns:
A minor downside of this tutorial is that it forces students to review the normal distribution prior to allowing them to move on to the material at hand. This may cause some students to stop working through the tutorial before they reach the more important simulations and exercises.
Potential Effectiveness Strengths:
This type of tutorial solves a problem that many instructors face. It is difficult to have students experience much about repeated samples in a textbook or even in a class because it takes too much time/energy. An applet like this is very useful and the tutorial is well-done. I think that students and faculty might not persist through the examples in the tutorial to find the applet.
Content Quality Rating:
5
Ease of Use Rating:
4
Potential Effectiveness Rating:
5
Source Code Available:
Source Code Available
Intended User Role:
Learner, Teacher
Material Type:
Resource Type:
Statistical Topic: