Oxnard Kortholt, Limited, employs 50 workers. Research question: At a = .05, do Oxnard employees differ significantly from the national percent distribution? Oxnard Employees Health Care Visits National Percentage Frequency No visits 16.7 6 1 to 3 visits 42.2 20 4 to 9 visits 25.4 18 10 or more visits 15.7 6 Total 100.0 50 Qpicture Click here for the Excel Data File (a) The hypothesis for the given issue is Ho: Oxnard employees do not differ significantly from the national percent distributions 0 Yes 0 No (b) Calculate the chi-square test statistic, degrees of freedom and the pvalue. (Round your test statistic value to 3 decimal places and the p-value to 4 decimal places.) Test statistic Degrees of freedom pvalue