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M&Ms Quality Control: A Chi-Square Analysis

This is my take on the ubiquitous M&Ms counting activity. Each student records the color proportions in a fun-size bag of M&Ms. We pool the class data and run a Chi-Square goodness-of-fit test to determine whether or not the color proportions match those claimed on the manufacturer's website. We consistently find that the proportions do not match. The blue M&Ms, in particular, are underrepresented. This activity also includes a review of the 1-proportion z confidence interval.

Alternate Title: 
M&Ms counting activity
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Author Name: 
Laura Schultz
Technical Requirements: 
TI-83/84
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Source Code Available
Intended User Role: 
Learner
Teacher
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Yes
Cost: 
Free for Nonprofits
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