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Name: Wit: SAMPLING DISTRIBUTION EXERCISE The average length of a hospital stay in general or community...
Problem 2: The average length of a hospital stay in general or community hospitals in the...
Problem 2: 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? (40 points)
1) In a population survey of patients in a rehabilitation hospital, the mean length of stay...
1) In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The population distribution was normal. a. Out of 100 patients how many would you expect to stay longer than 13 weeks? b. What is the percentile rank of a stay of 11.3 weeks? c. What percentage of patients would you expect to stay between 11.5 weeks and 13.0 weeks? 2)On...
Consider a large hospital that wants to estimate the average length of stay of its patients....
Consider a large hospital that wants to estimate the average length of stay of its patients. The hospital randomly samples n = 100 of its patients and finds that the sample mean length of stay is 4.5 days. Assume that the standard deviation of the length of stay for all hospital patients is 4 days. Find a 95% confident interval for true mean length of all hospital patients. O (3.84.5.16) O (3.72,5.28)
Question Help The standard deviation of the lengths of hospital stay on the intervention ward is...
Question Help The standard deviation of the lengths of hospital stay on the intervention ward is 78 days. Come parts through (c) below a. For the variable length of hospital stay." determine the sampling distribution of the sample mear for samples of patients The standard deviation of the sample mean is days. (Round to four decimal places as needed.) b. The distribution of the length of hospital stayis right skewed Does this invalidate your result in part (a? Explain your...
(3) Suppose the length of stay in a chronic disease hospital of a certain type of...
(3) Suppose the length of stay in a chronic disease hospital of a certain type of patient has the mean of 60 days with a standard deviation of 15 days. It is reasonably to assume an approximately normal distribution of the lengths of stay (a) If one patient is selected from this group at random, what the probability that this patient will have a length of stay between 50 and 90 days? at is selected from this group at random,...
Problem 4 The length of maternity stay in U.S. hospitals is normally distributed, with mean of...
Problem 4 The length of maternity stay in U.S. hospitals is normally distributed, with mean of 2.6 days and a standard deviation of 0.5 days. We randomly survey 89 women who recently bore children in U.S. hospitals. Let X = maternity stay in U.S. hospital, and X = average maternity stay for a sample of size 89 a. X (pick one) ) b. X (pick one) . с. What is the probability that the average stay is more than 3...
5. The management of Recover Fast Hospital (RFH) claims that the average length of stay in...
5. The management of Recover Fast Hospital (RFH) claims that the average length of stay in their hospital after a major surgery is less than the average length of stay at General Hospital (GH). Independent random samples were selected and the following statistics were calculated. Sample size Mean (in days) Standard deviation (a) RFH 45 0.6 0.5 GH 58 4.9 0.6 (1POINT) Formulate the hypotheses но. mu1-mu2 a mu1<mu2 Compute the test statistic Using the p-value approach, determine if the...
The length of maternity stay in U.S. hospitals is normally distributed, with mean of 3.5 days...
The length of maternity stay in U.S. hospitals is normally distributed, with mean of 3.5 days and a standard deviation of 0.5 days. We randomly survey 62 women who recently bore children in U.S. hospitals. Let Xmaternity stay in U.S. hospital, and Xaverage maternity stay for a sample of size 62 a. (30) Xickone) .) b. (.30) X ~ (pick one) . (.40) Which of the following is more likely? Oan individual stays more than 5 days the average stay...
Suppose you monitor quality assurance for a local hospital and want to estimate the average length...
Suppose you monitor quality assurance for a local hospital and want to estimate the average length of stay (LOS) at your hospital. You take a random sample of 30 patients and find that the average LOS is 3.8 days with a sample standard deviation of 1.2 days. What is the 95% confidence interval for the population average length of stay? Select one: (3.43, 4.17) (3.35, 4.25) (3.20, 4.40) (3.61, 3.82) none of these are correct
Intensive care unit (ICUS) generally treat the sidest patients in a hospital ICUs are often the...
Intensive care unit (ICUS) generally treat the sidest patients in a hospital ICUs are often the most expensive department in a hospital because of the specialized equipment and extensive training required to be an ICU doctor or nurse. Therefore, it is important to use ICUs as efficiently as possible in a hospital Suppose that a large-scale study of elderly ICU patients shows that the average length of stay in the ICU is 3.5 days. Assume that this length of stay...
Problem 2: 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? (40 points)
Consider a large hospital that wants to estimate the average length of stay of its patients. The hospital randomly samples n = 100 of its patients and finds that the sample mean length of stay is 4.5 days. Assume that the standard deviation of the length of stay for all hospital patients is 4 days. Find a 95% confident interval for true mean length of all hospital patients. O (3.84.5.16) O (3.72,5.28)
Question Help The standard deviation of the lengths of hospital stay on the intervention ward is 78 days. Come parts through (c) below a. For the variable length of hospital stay." determine the sampling distribution of the sample mear for samples of patients The standard deviation of the sample mean is days. (Round to four decimal places as needed.) b. The distribution of the length of hospital stayis right skewed Does this invalidate your result in part (a? Explain your...
(3) Suppose the length of stay in a chronic disease hospital of a certain type of patient has the mean of 60 days with a standard deviation of 15 days. It is reasonably to assume an approximately normal distribution of the lengths of stay (a) If one patient is selected from this group at random, what the probability that this patient will have a length of stay between 50 and 90 days? at is selected from this group at random,...
Problem 4 The length of maternity stay in U.S. hospitals is normally distributed, with mean of 2.6 days and a standard deviation of 0.5 days. We randomly survey 89 women who recently bore children in U.S. hospitals. Let X = maternity stay in U.S. hospital, and X = average maternity stay for a sample of size 89 a. X (pick one) ) b. X (pick one) . с. What is the probability that the average stay is more than 3...
5. The management of Recover Fast Hospital (RFH) claims that the average length of stay in their hospital after a major surgery is less than the average length of stay at General Hospital (GH). Independent random samples were selected and the following statistics were calculated. Sample size Mean (in days) Standard deviation (a) RFH 45 0.6 0.5 GH 58 4.9 0.6 (1POINT) Formulate the hypotheses но. mu1-mu2 a mu1<mu2 Compute the test statistic Using the p-value approach, determine if the...
The length of maternity stay in U.S. hospitals is normally distributed, with mean of 3.5 days and a standard deviation of 0.5 days. We randomly survey 62 women who recently bore children in U.S. hospitals. Let Xmaternity stay in U.S. hospital, and Xaverage maternity stay for a sample of size 62 a. (30) Xickone) .) b. (.30) X ~ (pick one) . (.40) Which of the following is more likely? Oan individual stays more than 5 days the average stay...
Intensive care unit (ICUS) generally treat the sidest patients in a hospital ICUs are often the most expensive department in a hospital because of the specialized equipment and extensive training required to be an ICU doctor or nurse. Therefore, it is important to use ICUs as efficiently as possible in a hospital Suppose that a large-scale study of elderly ICU patients shows that the average length of stay in the ICU is 3.5 days. Assume that this length of stay...
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