hat 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):

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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):

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 pr
56.7
S =
56.5 52.9 66.5 59.0 64.7 70.1 64.7 53.5 78.2
Assume that the population of x values has an approximately normal distribution.
(a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage. and the sample standard deviation s. (Round your answers to four decimal places.)
x =
%
%
USE SALT
Need Help?
(b) 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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Transcribed Image Text: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 pr 56.7 S = 56.5 52.9 66.5 59.0 64.7 70.1 64.7 53.5 78.2 Assume that the population of x values has an approximately normal distribution. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage. and the sample standard deviation s. (Round your answers to four decimal places.) x = % % USE SALT Need Help? (b) 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 Read It Master It
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