The Department of Health and Welfare in Pulaski County is reviewing charges for a common surgical procedure which was performed in each of three hospitals located within Pulaski County. A random sample of five charges for the surgical procedure from each of the three hospitals is listed in the table to the right. At the .01 level of significance, does there appear to be any difference in the mean charge for this surgical procedure among the three hospitals? Providence 5580 5975 7544 6067 9080 a. State the null and alternate hypotheses. Họ:

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