A sample is to be taken to develop an approximate 95% confidence interval estimate of the population

Question:

A sample is to be taken to develop an approximate 95% confidence interval estimate of the population mean. The population consists of 450 elements, and a pilot study resulted in s = 70. How large must the sample be if we want to develop an approximate 95% confidence interval with a width of 30?
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Statistics For Business & Economics

ISBN: 9781285846323

12th Edition

Authors: David Anderson, Dennis Sweeney, Thomas Williams, Jeffrey Camm, James Cochran

Question Posted: