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A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. C (a) n 1667 (Round up to the nearest integer.) (b) n = (Round up to the nearest integer)

A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. C (a) n 1667 (Round up to the nearest integer.) (b) n = (Round up to the nearest integer)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Having some trouble, my equation was 0.56(1-0.56)(2.59/0.02)^2

A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. (a) n = 1667 (Round up to the nearest integer.) (b) n = (Round up to the nearest integer.)
Transcribed Image Text:A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.02 with 90% confidence if (a) she uses a previous estimate of 0.56? (b) she does not use any prior estimates? Click the icon to view the table of critical values. (a) n = 1667 (Round up to the nearest integer.) (b) n = (Round up to the nearest integer.)
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