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 six percentage points of true population percentage? Complete parts (a) through (c) below. A.) assume that nothing is known about the percentage of adults who have heard of the brand. B.) assume that a recent surgery suggest that about 76% of adults have heard of the brand.
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 six percentage points of true population percentage? Complete parts (a) through (c) below. A.) assume that nothing is known about the percentage of adults who have heard of the brand. B.) assume that a recent surgery suggest that about 76% of adults have heard of the brand.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter7: Percents
Section: Chapter Questions
Problem 10PTTS
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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 six percentage points of true population percentage?
Complete parts (a) through (c) below.
A.) assume that nothing is known about the percentage of adults who have heard of the brand.
B.) assume that a recent surgery suggest that about 76% of adults have heard of the brand.
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