Posted by **len** on Thursday, April 26, 2012 at 3:37pm.

Refer to Table 1 in the article “Snail Shells in a Practical Application of Statistical Procedures” in the Electronic Reserve Readings. Find the margin of error, E, with a confidence interval of your choosing (50-99%). What is the significance of choosing a confidence interval? What is the difference between selecting a 50% confidence interval versus a 95% confidence interval? What happens to E if the sample size is increased tenfold?