A study is done in sydney to estimate the proportion of people living there who have travelled outside of Austrilia. Previous research has found that is proportion is equal to roughly 28%. Find the minimum sample size needed for the study in order to obtain a minimum 5% margin of error in an approximate 95% confidence interval for this proportion.
A study is done in sydney to estimate the proportion of people living there who have travelled outside of Austrilia. Previous research has found that is proportion is equal to roughly 28%. Find the minimum sample size needed for the study in order to obtain a minimum 5% margin of error in an approximate 95% confidence interval for this proportion.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A study is done in sydney to estimate the proportion of people living there who have travelled outside of Austrilia. Previous research has found that is proportion is equal to roughly 28%.
Find the minimum
Expert Solution
Step 1
Given:
Sample proportion
Confidence interval =0.95
So,
Margin of error (E)
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