Question

A sample of 22 items provides a sample standard deviation of 6. (a) Compute the 90%...

A sample of 22 items provides a sample standard deviation of 6.

(a)

Compute the 90% confidence interval estimate of the population variance. (Round your answers to two decimal places.)

________ to _________

(b)

Compute the 95% confidence interval estimate of the population variance. (Round your answers to two decimal places.)

________ to _______

(c)

Compute the 95% confidence interval estimate of the population standard deviation. (Round your answers to one decimal place.)

________ to _________

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A sample of 20 items provides a sample standard deviation of 5.                                
A sample of 20 items provides a sample standard deviation of 5.                                                                                      a. Compute the 90% confidence interval estimate of the population variance.                                                                                        b. Compute the 95% confidence interval estimate of the population variance.                                                                         c. Compute the 95% confidence interval estimate of the population variance.
A simple random sample of 70 items resulted in a sample mean of 80. The population standard deviation is
A simple random sample of 70 items resulted in a sample mean of 80. The population standard deviation isσ = 15.(a)Compute the 95% confidence interval for the population mean. (Round your answers to two decimal places.)to(b)Assume that the same sample mean was obtained from a sample of 140 items. Provide a 95% confidence interval for the population mean. (Round your answers to two decimal places.)to(c)What is the effect of a larger sample size on the interval estimate?A larger sample size...
A simple random sample of 40 items resulted in a sample mean of 30. The population...
A simple random sample of 40 items resulted in a sample mean of 30. The population standard deviation is σ = 20. a. Compute the 95% confidence interval for the population mean. Round your answers to one decimal place. Assume that the same sample mean was obtained from a sample of 100 items. Provide a 95% confidence interval for the population mean. Round your answers to two decimal places. What is the effect of a larger sample size on the...
Exercise 1. Suppose a random sample of 22 items produces a sample standard deviation of 16....
Exercise 1. Suppose a random sample of 22 items produces a sample standard deviation of 16. Develop a 90% confidence interval estimate for the population variance.
A random sample of 23 items is drawn from a population whose standard deviation is unknown....
A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean is x¯x¯ = 770 and the sample standard deviation is s = 25. Use Appendix D to find the values of Student’s t. (a) Construct an interval estimate of μ with 95% confidence. (Round your answers to 3 decimal places.)    The 95% confidence interval is from  to (b) Construct an interval estimate of μ with 95% confidence, assuming that s =...
A random sample of 125 items is drawn from a population whose standard deviation is known...
A random sample of 125 items is drawn from a population whose standard deviation is known to be σ = 30. The sample mean is  x¯ = 860. (a) Construct an interval estimate for μ with 95 percent confidence. (Round your answers to 1 decimal place.)   The 95% confidence interval is from _________ to __________ (b) Construct an interval estimate for μ with 95 percent confidence, assuming that σ = 60. (Round your answers to 1 decimal place.)   The 95% confidence...
A random sample of 24 items is drawn from a population whose standard deviation is unknown....
A random sample of 24 items is drawn from a population whose standard deviation is unknown. The sample mean is x¯ = 870 and the sample standard deviation is s = 25. Use Appendix D to find the values of Student’s t. (a) Construct an interval estimate of μ with 98% confidence. (Round your answers to 3 decimal places.) The 98% confidence interval is from to (b) Construct an interval estimate of μ with 98% confidence, assuming that s =...
A simple random sample of 90 items from a population with ? = 7 resulted in...
A simple random sample of 90 items from a population with ? = 7 resulted in a sample mean of 31. If required, round your answers to two decimal places. a. Provide a 90% confidence interval for the population mean. ______ to ______ b. Provide a 95% confidence interval for the population mean. _____ to _____ c. Provide a 99% confidence interval for the population mean. _____ to _____
A random sample of 51 charge sales showed a sample standard deviation of $47. A 90%...
A random sample of 51 charge sales showed a sample standard deviation of $47. A 90% confidence interval estimate of the population standard deviation is (Round your answers to 2 decimal places.)
Compute the (sample) variance and standard deviation of the data sample. (Round your answers to two...
Compute the (sample) variance and standard deviation of the data sample. (Round your answers to two decimal places.) −1, 7, 7, 5, 12 variance 22 standard deviation     ?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT