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 55.9 52.6 66.2 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 x and the sample standard deviation s. (Round your answers to one decimal place.) x = 6212 % s = 8.1 % (b) Find a 90% confidence interval for the population average μ 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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Mathematics

Corey Nguyen

24 December, 05:06

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 55.9 52.6 66.2 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 x and the sample standard deviation s. (Round your answers to one decimal place.) x = 6212 % s = 8.1 % (b) Find a 90% confidence interval for the population average μ 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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Aubrie Barton · Answer 1

Step-by-step explanation:

1) a) x = 62.2 % s = 8.0 % b) lower limit 58.1% upper limit 66.4% 2) a) x = 64.2 crimes per 1000 people s = 27.9 crimes per 1000 people b) lower limit 58.9 crimes per 1000 people upper limit 69.4 ... i think this is your answer