The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 80% confident that his estimate is within five percentage points of the true population
Part 1 a) Assume that nothing is known about the percentage of adults who have heard of the brand.
what does n equal?
n =
*im stuck on finding n the sample size
Part 1 a) Assume that nothing is known about the percentage of adults who have heard of the brand.
what does n equal?
n =
*im stuck on finding n the sample size