Posted by **Jenny** on Friday, January 29, 2010 at 8:55pm.

Given the following situation, how would you use Megastat to test whether the population defective rate is greater than 10%? Please outline the process for the test and, if necessary, including the output from Megastat to explain your approach. What conditions do you need to check to make sure that the analysis is valid.

"A random sample of 200 cell phones was inspected in a cell phone factory. It was found that 12 of the cell phone is defective in some way. Based on this data, the auditor wants to perform a statistical test to see that the defective rate of cell phone produced by the factory is greater than 10%."