Oxnard Kortholt, Ltd., employs 50 workers. During the last year, the company noted the number of visits with health care professionals (doctor, emergency, home) for each of its employees. U.S. national percentages are also shown. Research question: At α = .05, do Oxnard employees differ significantly from the national percent distribution? (National percentages are from The World Almanac and Book of Facts, 2005 [World Almanac Education Group, Inc., 2005], p. 180.)

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National Percentage 16.5 45.8 24.4 13.3 100.0 Oxnard Employees Frequency 4 20 15 Health Care Visits No visits 1-3 visits 4-9 visits 10 or more visits 50 Total