Connexions module: m24946 1
Chi Squared Distribution Lab
∗
Mary Teegarden
This work is produced by The Connexions Project and licensed under the
Creative Commons Attribution License
†
Abstract
This lab combines both the Chi-Squared goodness of t and test for independence. It also incorporates
the use of minitab software.
Chi-Squared Hyponthesis Tests
Name:
1 Student Learning Outcomes:
•
The student will select the appropriate Chi-Squared Hypothesis Tests.
•
The student will conduct hypothesis tests and interpret the results.
2 Candy Lab Revisited
Suppose the color distribution for the candy from your initial Candy Lab is uniform. Based on the class
data, does it appear that the distribution is actually uniform? (
α
= 0.08)
1. Ho: Ha:
2. Which
γ
2
- distribution test will be used?
3. Using Minitab, draw the
γ
2
probability graph and label it appropriately. Attach the graph to this lab.
4. What is the formula for calculating the test statistic?
5. Calculate the test statistic and the p-value using Minitab. Include the session window output.
test statistic = p-value =
Do you reject or fail to reject the null hypothesis? Why?
(Use a complete sentence.)
Write a clear conclusion using a complete sentence.
3 Favorite Snacks
Is the choice of snack food dependent on gender? Survey sucient numbers of fellow classmates and others
to ensure that the conditions for this
γ
2
test are met. (
α
= 0.05)
Final Count:
∗
Version 1.1: Jun 10, 2009 12:53 pm GMT-5
†
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http://cnx.org/content/m24946/1.1/
