Reading proficiency: An educator wants to construct a 98% confidence interval for the proportion of elementary school children in Colorado who are proficier in reading. Part 1 of 3 (a) The results of a recent statewide test suggested that the proportion is 0.75. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.04? A sample of 635 elementary school children is needed to obtain a 98% confidence interval with a margin of error of 0.04. Part: 1 /3 Part 2 of 3 (b) Estimate the sample size needed if no estimate of p is available. A sample of elementary school children is needed to obtain a 98% confidence interval with a margin of error of 0.04. NOV 1 MacBook Air

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
Reading proficiency: An educator wants to construct a 98% confidence interval for the proportion of elementary school children in Colorado who are proficient
in reading.
Part 1 of 3
(a) The results of a recent statewide test suggested that the proportion is 0.75. Using this estimate, what sample size is needed so that the confidence
interval will have a margin of error of 0.04?
A sample of 635 elementary school children is needed to obtain a 98% confidence interval with a margin of error of 0.04.
Part: 1 /3
Part 2 of 3
(b) Estimate the sample size needed if no estimate of p is available.
A sample of elementary school children is needed to obtain a 98% confidence interval with a margin of error of 0.04.
NOV
MacBook Air
Transcribed Image Text:Reading proficiency: An educator wants to construct a 98% confidence interval for the proportion of elementary school children in Colorado who are proficient in reading. Part 1 of 3 (a) The results of a recent statewide test suggested that the proportion is 0.75. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.04? A sample of 635 elementary school children is needed to obtain a 98% confidence interval with a margin of error of 0.04. Part: 1 /3 Part 2 of 3 (b) Estimate the sample size needed if no estimate of p is available. A sample of elementary school children is needed to obtain a 98% confidence interval with a margin of error of 0.04. NOV MacBook Air
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman