Question
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):
56.9 | 55.7 | 53.1 | 65.7 | 59.0 | 64.7 | 70.1 | 64.7 | 53.5 | 78.2 |
Assume that the population of x values has an approximately normal distribution.
Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to four decimal places
x=
s=
Find a 90% confidence interval for the population average of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.)
lower limit =
upper limit =
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