Tuesday

October 21, 2014

October 21, 2014

Posted by **Zodra** on Monday, August 23, 2010 at 6:18pm.

- Statistics -
**MathGuru**, Monday, August 23, 2010 at 7:19pmTo reduce the width of a confidence interval in half, you have to multiply the sample size by 4 (in effect quadrupling the sample size).

**Answer this Question**

**Related Questions**

Statistics - Calculate the following: a) Determine the sample size necessary to ...

statistics - An IQ is designed so that the mean is 100 and the standard ...

Statistics - An IQ test is designed so that the mean is 100 and the standard ...

statistics - A simple random sample of 60 items resulted in a sample mean of 80...

Statistics - Suppose x has a mound-shaped distribution with sigma = 9 . A random...

statistics - what are the mean and standard deviation of a sampling distribution...

statistics - Help!!!!!! A confidence interval estimate for the population mean ...

Statistics - Davey wonders what proportion of the students at his school is ...

Statistics (42) - A simple random sample of 60 items resulted in a sample mean ...

Statistics (46) - The 2003 Statistical Abstract of the United States reported ...