Cheryl Stake is concerned that too many forms are being filled out incorrectly. She feels that about 10 percent of all the forms have an error
How large a sample size should Ms. Stake use to be 96-percent certain she will be within 0.05?
Suppose Ms. Stake will accept a confidence level of 90 percent that she will be within 0.07. What will the sample size of forms be now?