What percentage of hospitals provide at least some charity care? The following problem is based on information from State Health Care Data: Utilization, Spending, and Characteristics (American Medical Association). Based on a random sample of hospital reports from eastern states, the following information was obtained (units in percentage of hospitals providing at least some charity care):

57.1 56.2 53.0 66.1 59.0 64.7 70.1 64.7 53.5 78.2

Use the data above to find a 90% confidence for the population average, μ, of the percentage of hospitals providing at least some charity care.

Select one:

A54.7% to 62.9%

B57.7% to 66.9%

C55.7% to 63.9%

DCan not be determined from information given.