You have been asked to determine the proportion of all out-of-state fishermen who took at least one overnight fishing trip in the past year. Your estimate is to be within + / - 2% of the population...

1. You have been asked to determine the proportion of all out-of-state fishermen who took at least one overnight fishing trip in the past year. Your estimate is to be within + / - 2% of the population mean; the confidence level is to be 95%; and the best guess is that 25% of out-of-state respondents have taken at least one overnight fishing trip. How large a sample do you need?

Confidence Level:

Desired precision:

Estimated population proportion:

Required sample size: