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John Isaac Inc., a designer and installer of industrial signs, employs 60 people. The company recorded the type of the most recent visit to a doctor by each employee. A national assessment conducted in 2014 found that 53% of all physician visits were to primary care physicians, 19% to medical specialists, 17% to surgical specialists, and 11% to emergency departments. Test at the .01 significance level if Isaac employees differ significantly from the survey distribution. Here are their results:
Visit Type Number of Visits
Primary care .......... 29
Medical specialist ........ 11
Surgical specialist ........ 16
Emergency ......... 4 |
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