Question

A cellular telephone manufacturer that entered the post regulation márket too quickly has an initial problem with excessive customer complaints and consequent returns of the cell phones for repair or replacement. The manufacturer wants to determine the magnitude of the problem in order to estimate its warranty liability. How many cellular telephones should the company randomly sample from its warehouse and check in order to estimate the percentage defective to withina margin of error of0.01 with 90% confidence? Use p-o.10. 2.

Answer 1