Suppose we measure length of hospital stay (in days) for patients undergoing a particular surgical procedure....
Suppose we measure length of hospital stay (in days) for patients undergoing a particular surgical procedure. The mean is 3 days with a standard deviation of 3.2 days.
(a) [10 points] If a sample of 35 patients is selected, what is the probability that their mean length of stay is less than 2 days?
(b) [10 points] If a sample of 35 patients is selected, what is the probability that their mean length of stay is more than 5 days?
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Suppose we measure length of hospital stay (in days) for
patients undergoing a particular surgical procedure....
Name: Wit: SAMPLING DISTRIBUTION EXERCISE The average length of a hospital stay in general or community...
Name: Wit: SAMPLING DISTRIBUTION EXERCISE The average length of a hospital stay in general or community hospitals in the United States is 6 days Assume that the population standard deviation is 7.7 days. A simple random sample of 49 patients is drawn from this population. 1. What is the sampling distribution of the sample mean? 2. What is the probability that the average length of stay for this group of patients will be no more thana week? 3. What is...
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)
(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,...
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...
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)
the average length of a hospital stay is 4.8 days. if we assume the lengths of...
the average length of a hospital stay is 4.8 days. if we assume the lengths of hospital stays are normally distributed with a standard deviation of 1.499, then 10% of hospital stays are longer than how many days?
The patient recovery time from a particular surgical procedure is normally distributed with a mean of...
The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.3 days and a standard deviation of 2.1 days. The insurance company will not pay for patients to stay in the hospital if recovery time is more than the usual time to recover. Would a patient who takes ten days to recover have to pay some of his own bill? yes since this is outside of the normal range. no the score is within normal...
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 patient recovery time for a particular surgical procedure is normally distributed with a a mean...
The patient recovery time for a particular surgical procedure is normally distributed with a a mean of μ = 5.7 days and a standard deviation of σ = 1.2 days. (Round your answers to 3 decimal places.) a) 95% of patients have a recovery time between and . b) What is the recovery time for a patient who is 1.5 standard deviations below the mean? c) If X is the recovery time, compute P(3≤X≤4) and interpret what it means in the context...
A medical researcher wants to determine if the average hospital stay after a certain procedure is...
A medical researcher wants to determine if the average hospital stay after a certain procedure is less than 14.97 days. The hypotheses for this scenario are as follows: Null Hypothesis: μ ≥ 14.97, Alternative Hypothesis: μ < 14.97. If the researcher randomly samples 20 patients that underwent the procedure and determines their average hospital stay was 15.74 days with a standard deviation of 7.811 days, what is the test statistic and p-value of this test?
Name: Wit: SAMPLING DISTRIBUTION EXERCISE The average length of a hospital stay in general or community hospitals in the United States is 6 days Assume that the population standard deviation is 7.7 days. A simple random sample of 49 patients is drawn from this population. 1. What is the sampling distribution of the sample mean? 2. What is the probability that the average length of stay for this group of patients will be no more thana week? 3. What is...
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)
(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 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)
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...
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