Lori M. is trying to determine the proportion of expense reports that contain questionable charges. She takes a random sample of 300 records and finds that 33 of the reports have one or more questionable charges.
Develop a 95% confidence interval on the population proportion based on the sample results.
Determine how large a sample she would need to take in order to be 99% certain that the maximum error in the predicted population proportion was 1%.