Answered

Find the best solutions to your questions at Westonci.ca, the premier Q&A platform with a community of knowledgeable experts. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

A random sample of 16 items is drawn from a population whose standard deviation is unknown. The sample mean is = 890 and the sample standard deviation is s= 15. Use Appendix D to find the values of Student's t.
(a) Construct an interval estimate of u with 95% confidence. (Round your answers to 3 decimal places.)
(b) Construct an interval estimate of u with 95% confidence, assuming that s= 30. (Round your answers to 3 decimal places.)
(c) Construct an interval estimate of u with 95% confidence, assuming that s= 60. (Round your answers to 3 decimal places.)
(d) Describe how the confidence interval changes as s increases.
A. The interval stays the same as s increases.
B. The interval gets wider as s increases.
C. The interval gets narrower as s increases

Sagot :

We hope our answers were useful. Return anytime for more information and answers to any other questions you have. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.