# Question: The average length of a hospital stay in general or

The average length of a hospital stay in general or community hospitals in the United States is 5.5 days. Assuming a population standard deviation of 2.5 days and a simple random sample of 50 patients, what is the probability that the average length of stay for this group of patients will be no more than 6.5 days? If the sample size had been 8 patients instead of 50, what further assumption(s) would have been necessary in order to solve this problem?

## Answer to relevant Questions

According to the Newspaper Association of America, the average visitor to online newspaper sites spends 45 minutes per month reading online news content. Assuming a population standard deviation of 10 minutes and a simple ...It has been reported that 40% of U.S. workers employed as purchasing managers are females. In a simple random sample of U.S. purchasing managers, 70 out of the 200 are females. Given this information: a. What is the ...A population of 500 values is distributed such that μ = $1000 and σ = $400. For a simple random sample of n = 200 values selected without replacement, describe the sampling distribution of the mean. Repeat Exercise 8.40, but with n = 30 observations in each sample. Repeat Exercise The manufacturer of a travel alarm clock claims that, on the average, its clocks deviate from perfect time by 30 seconds per month, with a standard deviation of 10 seconds. Engineers from a consumer magazine purchase 40 of ...Post your question