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b) Assume that a recent survey suggests that about 82% of adults have heard of the brand. n = (Round up to the nearest integer.)

b) Assume that a recent survey suggests that about 82% of adults have heard of the brand. n = (Round up to the nearest integer.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter1: Expressions And Functions
Section1.5: Descriptive Modeling And Accuracy
Problem 11PPS
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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 seven percentage points of the 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. n= 84 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 82% of adults have heard of the brand. (Round up to the nearest integer.)
Transcribed Image Text: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 seven percentage points of the 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. n= 84 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 82% of adults have heard of the brand. (Round up to the nearest integer.)
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