he 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 eight percentage points of the true population percentage? a) Assume that nothing is known about the percentage of adults who have heard of the brand. n equals
he 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 eight percentage points of the true population percentage? a) Assume that nothing is known about the percentage of adults who have heard of the brand. n equals
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 64RE
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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 eight percentage points of the true population percentage?
a) Assume that nothing is known about the percentage of adults who have heard of the brand.
n equals
(Round up to the nearest integer.)
b) Assume that a recent survey suggests that about 79% of adults have heard of the brand.
n equals
(Round up to the nearest integer.)
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Assume that a recent survey suggests that about
79%
of adults have heard of the brand.n=
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