Question: Hospitals: Charity Care. What percentages of hospitals provide at least some charity care? The following problem is based on information taken from State Health Care Data: Utilization, Spending, and Characteristics. Based on a random sample hospital reports from eastern states, the following information was obtained (units in percentage of hospital providing at least some charity care)

Use a calculator with mean and sample standard deviation keys to verify that \(\bar{X}\) = 62.3 % and s = 8.0 %. Find 90 % confidence interval for the population average \(\mu \) of that percentage of hospital providing at least some charity care.