The amount of sodium in food has been of increasing concern due to its health implications. Beers from various producers have been analyzed for their sodium content. The file titled Sodium contains the amount of sodium (mg) discovered in 12 fluid ounces of beer produced by the four major producers: Anheuser-Busch Inc., Miller Brewing Co., Coors Brewing Co., and Pabst Brewing Co. The types of beer (ales, lager, and specialty beers) were also scrutinized in the analysis.
a. Determine if there is interaction between the producer and the type of beer. Use a significance level of 0.05.
b. Given your findings in part a, determine if there is a difference in the average amount of sodium in 12 ounces of beer among the producers of the beer. Use a significance level of 0.05.
c. Repeat part b for the types of beer. Use a significance level of 0.05.