Random samples of size 55 are taken from a normally distributed population that has 425 elements,...
Random samples of size 55 are taken from a normally distributed population that has 425 elements, a population mean of 20, and a population standard deviation of 7. What is the standard deviation of the sampling distribution of the sample means?
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Random samples of size 55 are taken from a normally distributed
population that has 425 elements,...
A random sample of size 15 was taken from a normally distributed population with a population...
A random sample of size 15 was taken from a normally distributed population with a population mean 26 and a population standard deviation 4. Determine each of the following about the sampling distribution of the sample mean. Round your answer to at least 3 decimal places where appropriate. a) μx_= b) σx_= c) Can we conclude that the sampling distribution of the sample mean is normal?
A random sample of size 12 was taken from a normally distributed population with a population...
A random sample of size 12 was taken from a normally distributed population with a population mean 28 and a population standard deviation 4. Determine each of the following about the sampling distribution of the sample mean. Round your answer to at least 3 decimal places where appropriate. a) un Number b) 0 = Number c) Can we conclude that the sampling distribution of the sample mean is normal? Click for List
A random sample of size 36 is to be taken from a population that is normally...
A random sample of size 36 is to be taken from a population that is normally distributed with mean 60 and standard deviation 18. The sample mean of the observations in our sample is to be computed. The sampling distribution of the sample mean is Select one: . a. normal with mean 36 and standard deviation 18. O b. normal with mean 60 and standard deviation 0.5. c. normal with mean 60 and standard deviation 3. d. normal with mean...
Two samples each of size 20 are taken from independent populations assumed to be normally distributed...
Two samples each of size 20 are taken from independent populations assumed to be normally distributed with equal variances. The first sample has a mean of 43.5 and a standard deviation of 4.1 while the second sample has a mean of 40.1 and a standard deviation of 3.2. A researcher would like to test if there is a difference between the population means at the 0.05 significance level. What can the researcher conclude? There is not sufficient evidence to reject...
Suppose that a random sample of size 1 is to be taken from a finite population...
Suppose that a random sample of size 1 is to be taken from a finite population of size N. Answer parts (a) through (c) below. a. How many possible samples are there? A. N + 1 B. N-1 0 C. N D. 1 b. Identify the relationship between the possible sample means and the possible observations of the variable under consideration. Choose the correct answer below. A. Each possible sample mean is equal to an observation, only if the population...
A random sample of size n = 25 is obtained from a normally distributed population with...
A random sample of size n = 25 is obtained from a normally distributed population with population mean μ =200 and variance σ^2 = 100. a) What are the mean and standard deviation of the sampling distribution for the sample means? b) What is the probability that the sample mean is greater than 203? c) What is the value of the sample variance such that 5% of the sample variances would be less than this value? d) What is the...
If random samples of size n = 36 are drawn from a nonnormal population with finite...
If random samples of size n = 36 are drawn from a nonnormal population with finite mean = 75 and standard deviation = 15, then the sampling distribution of the sample mean is approximately normally distributed with mean = 75 and standard deviation = 2.5. Select one: O a. False O b. True
A random sample of size n = 60 were selected from a normally distributed population with...
A random sample of size n = 60 were selected from a normally distributed population with with the mean of 15 and standard deviation of 6. What is the standard error (SE) of the sampling distribution of the sample mean? Write your answer with 4 decimal places.
Question 41 2.381 points Save Answer Random samples of size 49 are taken from a population...
Question 41 2.381 points Save Answer Random samples of size 49 are taken from a population that has 200 elements, a mean of 100, and a variance of 196. The distribution of the population is unknown. The mean and the standard error of the distribution of sample means are 100 and 28 100 and 2 100 and 24.39 100 and 1.74
If the standard deviation of a normally distributed population is 60 and we take a sample...
If the standard deviation of a normally distributed population is 60 and we take a sample of size 25, then what is the (standard error) standard deviation of the sampling distribution of sample means. * Your answer If the mean of a population is 3 points 250 and we take a sample of size 25, then what is the mean of the sampling distribution of sample means. * Your answer 3 points A certain car model has a mean gas...
A random sample of size 12 was taken from a normally distributed population with a population mean 28 and a population standard deviation 4. Determine each of the following about the sampling distribution of the sample mean. Round your answer to at least 3 decimal places where appropriate. a) un Number b) 0 = Number c) Can we conclude that the sampling distribution of the sample mean is normal? Click for List
A random sample of size 36 is to be taken from a population that is normally distributed with mean 60 and standard deviation 18. The sample mean of the observations in our sample is to be computed. The sampling distribution of the sample mean is Select one: . a. normal with mean 36 and standard deviation 18. O b. normal with mean 60 and standard deviation 0.5. c. normal with mean 60 and standard deviation 3. d. normal with mean...
Two samples each of size 20 are taken from independent populations assumed to be normally distributed with equal variances. The first sample has a mean of 43.5 and a standard deviation of 4.1 while the second sample has a mean of 40.1 and a standard deviation of 3.2. A researcher would like to test if there is a difference between the population means at the 0.05 significance level. What can the researcher conclude? There is not sufficient evidence to reject...
Suppose that a random sample of size 1 is to be taken from a finite population of size N. Answer parts (a) through (c) below. a. How many possible samples are there? A. N + 1 B. N-1 0 C. N D. 1 b. Identify the relationship between the possible sample means and the possible observations of the variable under consideration. Choose the correct answer below. A. Each possible sample mean is equal to an observation, only if the population...
If random samples of size n = 36 are drawn from a nonnormal population with finite mean = 75 and standard deviation = 15, then the sampling distribution of the sample mean is approximately normally distributed with mean = 75 and standard deviation = 2.5. Select one: O a. False O b. True
Question 41 2.381 points Save Answer Random samples of size 49 are taken from a population that has 200 elements, a mean of 100, and a variance of 196. The distribution of the population is unknown. The mean and the standard error of the distribution of sample means are 100 and 28 100 and 2 100 and 24.39 100 and 1.74
If the standard deviation of a normally distributed population is 60 and we take a sample of size 25, then what is the (standard error) standard deviation of the sampling distribution of sample means. * Your answer If the mean of a population is 3 points 250 and we take a sample of size 25, then what is the mean of the sampling distribution of sample means. * Your answer 3 points A certain car model has a mean gas...
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