Enteroliths Are Calcifications That Form in the Gut of a Horse

question 23

Multiple Choice

Enteroliths are calcifications that form in the gut of a horse. The stones can cause considerable morbidity and mortality. A study was conducted to investigate factors (such as diet and environment) that may be related to the formation of enteroliths. The study contained 62 horses with enteroliths (cases) and 75 horses without (controls) . The graph below contains side-by-side boxplots of the percent of alfalfa in the diet for cases and controls.
Based on the boxplot cases, the median amount of alfalfa in the diet of cases is:

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