Workers were categorized by their duration of exposure (in years) and by their disease status (chronic beryllium disease

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Workers Were Categorized By Their Duration Of Exposure In Years And By Their Disease Status Chronic Beryllium Disease 1 (72.59 KiB) Viewed 9 times

Workers were categorized by their duration of exposure (in years) and by their disease status (chronic beryllium disease, sensitization to beryllium, or no disease). The results were as follows: < 1 year 1 year to < 5 years > 5 years Diseased 10 8 23 Sensitized 9 19 11 Normal 70 136 206 Based on a chi-square test for homogeneity, can you conclude that the proportions of workers in the various disease categories differ among exposure levels? (Yes/No)