Hypothesis Testing with M&Ms

The plain M&M's Milk Chocolates are mass-produced with a distribution of 24% blue, 20% orange, 16% green, 14% yellow, 13% red and 13% brown.The peanut M&M's are mass-produced with a distribution of 23% blue, 23% orange, 15% green, 15% yellow, 12% red and 12% brown.

• Open a packet of your favorite M&Ms, plain or peanut.
• Count the number of M&M's in the packet.
• Count number of BLUE, ORANGE, GREEN and RED candies.
• Conduct a test of proportions for each of the four colors.Use two-tailed tests and a .05 significance level in each case.Be sure to use the proportions shown above as the hypothesized values.
• After each student has posted their results, the instructor will summarize the findings.What we should see is that about 5% of the samples will likely result in a rejection of the null hypothesis.