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 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.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 90% 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.)
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 90% 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.)
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