6 pts Question 17 Arandom sample of 100 observations is taken from anormal population where the...

Question

Question

Answer 1

Answer #1

The statistical software output for this problem is:

One sample Z summary confidence interval: p: Mean of population Standard deviation = 40 95% confidence interval results: U. L

On the basis of above output, 95% confidence interval will be:

92.16 to 107.84

Option A is correct.

Answer 2

Similar Homework Help Questions

Arandom sample of 21 observations taken from a population that is normally distributed produced a sample...

Arandom sample of 21 observations taken from a population that is normally distributed produced a sample mean of 58.5 and a standard deviation of 7.5. Find the range for the p-value and the critical and observed values of tfor the following test of hypothesis, using a = 0.01. Ho: = 55 versus H: > 55. Use the t distribution table to find a range for the p-value Round your answers for the values oft to three decimal places. <p-value torta...
Question text Suppose a sample of 28 observations is taken from a population, and the sample...

Question text Suppose a sample of 28 observations is taken from a population, and the sample correlation is r=0.45 r=0.45 . Find the upper limit of the 95% confidence interval for the population correlation. Select one: a. 0.582 c. 0.705
A sample of 46 observations is taken from a normal population with a standard deviation of...

A sample of 46 observations is taken from a normal population with a standard deviation of 26. The sample mean is 44. Determine the 80% confidence interval for the population mean. (Round the final answers to 3 decimal places.) Confidence interval for the population mean is and

A sample of 25 observations is taken from a normal distribution with a population variance of...

A sample of 25 observations is taken from a normal distribution with a population variance of 9. The sample mean is 5. The 95 percent confidence interval for the population mean is from A 3.82 B 6.18 C 3.76 D 6.24
A random sample of n = 25 observations is taken from a N(µ, σ ) population....

A random sample of n = 25 observations is taken from a N(µ, σ ) population. A 95% confidence interval for µ was calculated to be (42.16, 57.84). The researcher feels that this interval is too wide. You want to reduce the interval to a width at most 12 units. a) For a confidence level of 95%, calculate the smallest sample size needed. b) For a sample size fixed at n = 25, calculate the largest confidence level 100(1 −...
A sample of 49 observations is taken from a normal population with a standard deviation of 10. The sample mean is 55.

A sample of 49 observations is taken from a normal population with a standard deviation of 10. The sample mean is 55. Determine the 99% confidence interval for the population mean. (Round your answers to 2 decimal places.) Confidence interval for the population mean is _______ and _______ .A research firm conducted a survey to determine the mean amount Americans spend on coffee during a week. They found the distribution of weekly spending followed the normal distribution with a population standard deviation...

A sample of 36 observations is selected from a normal population

1. A sample of 36 observations is selected from a normal population. The sample mean is 21 , and the population standards deviation is 5 . Conduct a test of hypothesis using the 0.05 significance level. Null hypothesis =20 . Alternate = ?2. A sample of 81 observations is taken from normal population with a standard deviation of 5 . The sample mean is 40 . Determine the 95 %confidence interval for the population.3. Given the following sample observations which...
5 points Save As A sample of 100 observations is selected from a normal population where...

5 points Save As A sample of 100 observations is selected from a normal population where the population standard deviation is 30, and the sample mais 180 Calculate the Upper Limit of the confidence interval of the population mean Reminders You only need to calculate the Upper Limit of the confidence interval
Suppose a random sample of size 17 was taken from a normally distributed population, and the...

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 sample of 23 observations is selected from a normal population where the population standard deviation...

A sample of 23 observations is selected from a normal population where the population standard deviation is 28. The sample mean is 71. a. Determine the standard error of the mean. (Round the final answer to 3 decimal places.) The standard error of the mean is . b. Determine the 95% confidence interval for the population mean. (Round the z-value to 2 decimal places. Round the final answers to 3 decimal places.) The 95% confidence interval for the population mean is...