February 27, 2017

Homework Help: statistics

Posted by Prakash on Thursday, October 6, 2011 at 2:08pm.

A 90% confidence interval for a population mean based on 144 observations is computed to be (2.7,3.4). How many observations must be made so that 90% confidence interval will specify the mean to within ± 0.2

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions