# What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports of eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care): 57.4   56.4  53.2  65.6  59.0  64.7  70.1   64.7  53.5  78.2 Assume that the population x values an approximetely normal distribution. a) Use a calculater with mean and sample deviation keys to find the sample mean percentage x bar and sample standard deviation s. ( Round answers to one decimal place) A)     x bar=  _____________%         s      =_______________% B)     Find a 90% Confidence Interval for the population average Mu of the percentage of hospitals providing at least some charity care. (Round to one decimal place.) Lower Limit_______________% Upper Limit_______________%

Question

What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports of eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):

57.4   56.4  53.2  65.6  59.0  64.7  70.1   64.7  53.5  78.2

Assume that the population x values an approximetely normal distribution.

a) Use a calculater with mean and sample deviation keys to find the sample mean percentage x bar and sample standard deviation s. ( Round answers to one decimal place)

A)     x bar=  _____________%

s      =_______________%

B)     Find a 90% Confidence Interval for the population average Mu of the percentage of hospitals providing at least some charity care. (Round to one decimal place.)

Lower Limit_______________%

Upper Limit_______________%

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