Question: a random sample of 28 items is drawn from a population whose standard deviation is unknown. the sample mean is x with a line over

a random sample of 28 items is drawn from a population whose standard deviation is unknown. the sample mean is x with a line over it.= 790 and the sample standard deviation is

s=15 find the values of studen's t

a) construct and interval estimate of u with 99% confidence ( round answer to three decimals)

the 99% confidence interval is from __________ to __________

b) construct an interval estimate of u with 99% confidence assuming that s=30 (round to 3 decimals)

the 99% confidence interval is from _______________ to _______________

c) construct an interval estimat of u with 99% confidence assuming that s= 60 ( round the 3 decimals)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Home X D2L Homepage - Southern New Ham x Question 6 - 8-3 Homework: Cha X Course Hero X + X C A...

A random sample of 10 items is drawn from a population whose standard deviation is unknown. The sample mean is x-bar = 270 and the sample standard deviation is s = 20. Use Appendix D to find the...

A random sample of 11 items is drawn from a population whose standard deviation is unknown. The sample mean is x = 920 and the sample standard deviation is s = 25. Use Appendix D to find the values...

Please help me. The answers that I keep getting are wrong 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...

Chapter 8 (Sections 8.1 through 8.5) Saved Help A random sample of 14 items is drawn from a population whose standard deviation is unknown. The sample mean is x = 780 and the sample standard...

A random sample of 25 items is drawn from a population whose standard deviation is unknown. The sample mean is x-bar = 850 and the sample standard deviation is s = 15. Use Appendix D to find the...

A random sample of 28 items is drawn from a population whose standard deviation is unknown. The sample mean isx= 790 and the sample standard deviation is s = 15. UseAppendix Dto find the values of...

a random sample of 28 items is drawn from a population whose standard deviation is unknown. the sample mean is x=900 and the sample standard deviation is s=10. Use appendix D to find the value's of...

A random sample of 28 items is drawn from a population whose standard deviation is unknown. The sample mean isx x= 900 and the sample standard deviation is s = 10. UseAppendix Dto find the values of...

In the figure above, A=46, B-38, C-20, D=19, E-22.6, F=25.6, G=28.6, H=33.2. If the government auctioned off the quota licenses, what's the maximum revenue they could raise? Round to two decimal...

XYZ Corporation is considering two mutually exclusive projects that require a $150,000 investment each. Project A has an expected life of 6 years and will generate net cash flows of $35,000 per year....

Which of the following statements is CORRECT? For a given firm, the after - tax cost of debt is always lower than the before - tax cost of debt. The WACC is calculated using before - tax costs for...

Witt Corporation received its charter during January 2014. The charter authorized the following capital stock: Preferred stock: 10 percent, par $10, authorized 21,000 shares Common stock: par $8,...