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

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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
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
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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