Homework Answers
Add Answer to:
Problem 2: The average length of a hospital stay in general or community hospitals in the...
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...
Length of Stay ~ Health insurers and federal government are both putting pressure on hospitals to...
Length of Stay ~ Health insurers and federal government are both putting pressure on hospitals to shorten the average length of stay (LOS) of their patients. The average LOS for women is 4.5753 days according to Statistical Abstract of the United States: 2005. A first study conducted on a random sample of 20 hospitals in Michigan had a mean LOS for women of 3.8532 days and a standard deviation of 1.1599 days. A medical researcher wants to determine the sample...
Problem 3 The length of matermity stay in US. hospitals is normally distributed. with mean of...
Problem 3 The length of matermity stay in US. hospitals is normally distributed. with mean of 2.5 days and a standard deviation of 1.2 days. survey 68 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 68 a (30) X pick one) b. (30) x ~ | (pick one" l ( c (40) Which of the following is more likely? O an individual stays...
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)
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
(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,...
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?
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...
Problem 3 The length of matermity stay in US. hospitals is normally distributed. with mean of 2.5 days and a standard deviation of 1.2 days. survey 68 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 68 a (30) X pick one) b. (30) x ~ | (pick one" l ( c (40) Which of the following is more likely? O an individual stays...
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)
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...
(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,...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago