A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 2 percentage points with 90% confidence if (a) he uses a previous estimate of 26%? (b) he does not use any prior estimates? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) n = (b) n = (Round up to the nearest integer.) (Round up to the nearest integer.)
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 2 percentage points with 90% confidence if (a) he uses a previous estimate of 26%? (b) he does not use any prior estimates? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) n = (b) n = (Round up to the nearest integer.) (Round up to the nearest integer.)
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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A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 2 percentage
points with 90% confidence #
(a) he uses a previous estimate of 26%?
(b) he does not use any prior estimates?
(a) n= ___
(Round up to the nearest integer.)
(b) n= __
(Round up to the nearest integer.)
Transcribed Image Text:A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 2 percentage
points with 90% confidence if
(a) he uses a previous estimate of 26%?
(b) he does not use any prior estimates?
Click here to view the standard normal distribution table (page 1).
Click here to view the standard normal distribution table (page 2).
(a) n =
(b) n =
(Round up to the nearest integer.)
(Round up to the nearest integer.)
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