This week we learned about the Chi Square test which allows you to compare frequencies of groups!  So back in the day, the Mars Candy company claimed that there were 13% brown, 14% yellow, 13% red, 24% blue, 20% orange and 16% green.  We can use a chi square test to test this frequency claim.
First obtain a bag of M&M chocolate candies.  (If you don’t like M&M or don’t want to get the candy, you can use hypothetical data.  If you do use the candy you can’t use a fun size pack because the sample is too small (you can use several fun size together if you want)).
What is the Ho hypothesis?
What is the H1 hypothesis?
What is our expected value?
What is our observed value?  You are welcome to use the data below if you do not have M&M’s to count. 
What is our degree of freedom?  (because we are comparing the different colors, each color is counted as a category).
What is the chi square value?  You can use this calculator website if you would like. http://graphpad.com/quickcalcs/chisquared1.cfmLinks to an external site.  Remember to click the “percent expected” option on the website.
Expected:                                                           
13% brown,
14% yellow,
13% red,
24% blue,
20% orange
16% green
Observed (counted number):
12 brown,
15 yellow,
25 red,
10 blue,
5 orange
16 green
Copy and paste the first two lines of your results here:
Was it significant?
What is your favorite color of M&M?