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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 mus he survey in order to be 80% confident that his estimate is within eight 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= (Round up to the nearest integer.)

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 mus he survey in order to be 80% confident that his estimate is within eight 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= (Round up to the nearest integer.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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7.1.37-T Question Help 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 mus he survey in order to be 80% confident that his estimate is within eight 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. n3D (Round up to the nearest integer.) %3= Enter your answer in the answer box and then click Check Answer. 2 parts remaining Clear All Check Answer MacBook esc. 吕0 000 000 DII F1 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 $ & ) 1 2 4 5 6 7 8 { [ Q W E R т U P + I. %24 %# 3
Transcribed Image Text:7.1.37-T Question Help 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 mus he survey in order to be 80% confident that his estimate is within eight 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. n3D (Round up to the nearest integer.) %3= Enter your answer in the answer box and then click Check Answer. 2 parts remaining Clear All Check Answer MacBook esc. 吕0 000 000 DII F1 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 $ & ) 1 2 4 5 6 7 8 { [ Q W E R т U P + I. %24 %# 3
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