Confidence interval for the population mean
What percentage of hospitals provides as a minimum some charity care? 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
|
Utilize a calculator with mean and sample standard deviation keys to verify that x = 62.3% and s = 8.0%. Find a 90 percent confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.