Suppose a cable network wants to determine the current percentage of customers who are under the age of twenty. How many customers should the network survey in order to be 90% confident that the estimated (sample) proportion is within 3 percentage points of the true population proportion of customers who are under the age of twenty? z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576

Suppose a cable network wants to determine the current percentage of customers who are under the age of twenty. How many customers should the network survey in order to be 90% confident that the estimated (sample) proportion is within 3 percentage points of the true population proportion of customers who are under the age of twenty? z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576

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 7CR

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z0.10	z0.05	z0.025	z0.01	z0.005
1.282	1.645	1.960	2.326	2.576

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