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 15 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 137 was taken from a population with a population mean 25 and a population standard deviation 5. 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 approximately normal? YesNoClick for List
a random sample size 15 was taken from a normaly distributed pop with a mean of 26 and standard deviation of 6 mu x bar sigma x bar can we conclude the sampling distribution of the sample mean is normal
Suppose a random sample of size 17 was taken from a normally distributed population, and the sample standard deviation was calculated to be s = 5.0. a) Calculate the margin of error for a 95% confidence interval for the population mean. Round your response to at least 3 decimal places. b) Calculate the margin of error for a 90% confidence interval for the population mean. Round your response to at least 3 decimal places.
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...
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.
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?
A random sample of size n=12 obtained from a population that is normally distributed results in a sample mean of 455 and sample standard deviation 116 An independent sample of silen.17 obtained from a population that is normally distributed results in a sample mean of 528 and sample standard deviation 15.1. Does this constate suficient evidence to conclude that the population means differ at the a=0 10 level of significance? Click here to view the standard normal distribution table (page...
A random sample of size n = 13 obtained from a population that is normally distributed results in a sample mean of 45.2 and sample standard deviation 12.6. An independent sample of size n=17 obtained from a population that is normally distributed results in a sample mean of 51.1 and sample standard deviation 14.9. Does this constitute sufficient evidence to conclude that the population means differ at the a= 0.10 level of significance? Click here to view the standard normal...
A random sample of size n= 15 obtained from a population that is normally distributed results in a sample mean of 45.8 and sample standard deviation 12.2. An independent sample of size n = 20 obtained from a population that is normally distributed results in a sample mean of 51.9 and sample standard deviation 14.6. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.05 level of significance? Click here to view the...