THIS QUESTION IS FOR A CLASS CALLED MARKETING RESEARCH. PLEASE SHOW FULL WORK AS I AM TRYING TO UNDERSTAND THE ANSWER, NOT JUST GET TO THE SOLUTION.

Thanks in Advance

Assume that previous fast food research has shown that 80 percent of the consumers like curly French fries, and the researcher is commissioned by a local restaurant to do the survey in a local market with a population size of 10,000. The researcher wishes to have an error of 6 percent or less and be 95 percent confident of an estimate to be made about curly French fry consumption from a survey. What is the required sample size to achieve the above goals