An educator wants to construct a confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. find 1. Sample size 2. Sample size if p wasn’t available 3. Estimate portion would it be larger, smaller or about the same and does it depend on population
An educator wants to construct a confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. find 1. Sample size 2. Sample size if p wasn’t available 3. Estimate portion would it be larger, smaller or about the same and does it depend on population
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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An educator wants to construct a confidence interval for the proportion of elementary school children in Colorado who are proficient in reading.
find
1. Sample size
2. Sample size if p wasn’t available
3. Estimate portion would it be larger, smaller or about the same and does it depend on population

Transcribed Image Text:ading proficiency: An educator wants to construct a 99.9% confidence
erval for the proportion of elementary school children in Colorado who
e proficient in reading.
art: 0 / 3
art 1 of 3
a) The results of a recent statewide test suggested that the
proportion is 0.7. Using this estimate, what sample size is needed so
hat the confidence interval will have a margin of error of 0.03?
A sample of elementary school children is needed
o obtain a 99.9% confidence interval with a margin of
error of 0.03.
X
Ś
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