(This article was originally published at The Endeavour » Statistics, and syndicated at StatsBlogs.)
Medalla is a Puerto Rican beer. On the side of a can it says
Alcohol by volume over 4%, not more than 6%.
I’d never seen a beer give a confidence interval for its alcohol content. I’d only seen point estimates before. For example, Budweiser announces that its beer contains 5% alcohol by volume. Just 5%, no statistical details.
I wonder why Medalla reports an interval.
- Is their manufacturing process so variable that they can’t just report an average?
- Is their manufacturing process no more variable than others, but they disclose their uncertainty?
- Are they required to report alcohol content the way they do by local law or by the law of countries they export to?
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