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Lesson 71.2: Day T: Does gummy bear brand matter ? Is the distribution of gummy bear color the same for Haribo gummy bears and Meijer gummy bears? We'll collect data as a class and determine if we have convincing evidence of a difference, 1. Add your data to the board and fill in the table below with the class totals. Observed: Brand Haribo Meijer Total Red 16 70 Green 13 Color Yellow Orange 3 W White Total 79 2. How many samples do we have? What population are they from? Explain. 3. How many variables are we examining? Explain. 4. As a class, write down hypotheses for a significance test. 5. Now we will use a chi-square test to test if there is a difference between the two populations. We first need to find the expected values. Complete the table below. Expected: Brand Haribo Meijer Total Red IC - 2 13.8 10 Green 4.7 Color Yellow 8. G . T Orange 7.0 C.U White 7.0 G.6 (3 Total 41 89 Name: Period: Date: 6. Use your work on the front page to complete a 4 step significance lest. STATE: Hypotheses: Significance level: PLAN: Name of procedure: Chi-square test for homogeneity Check conditions: DO: Specific Formula: Work: df = (rows = 1)(columns - 1) Picture: Test statistics P-value: CONCLUDE