Mathematics, 15.07.2021 20:00, Tyrant4life

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 90% confident that his estimate is within five percentage points of the true population percentage? b) Assume that a recent survey suggests that about 87% of adults have heard of the brand.

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The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognit...