**Reading Proficiency: Confidence Interval Construction for Elementary School Students**An educator aims to develop a 95% confidence interval to estimate the proportion of elementary school children in Colorado who are proficient in reading.**Part 0 / 3****Part 1 of 3***(a)* The results of a recent statewide test suggested that the proportion is 0.61. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.06?A sample of [_____] elementary school children is needed to obtain a 95% confidence interval with a margin of error of 0.06.

The confidence level is 95%, population proportion is 0.61 and margin of error is 0.06.

Answered: Reading proficiency: An educator wants…

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 study has been conducted of the airspeed of various bird species. You would like to specify the difference in airspeed. The following information is obtained. 1. What multiplier should I use for 95% confidence interval? 2. Can you construct a confidence interval for the difference? 3. Does that interval support the hypothesis that there is a difference in the airspeed of these two species?
Use R Studio to answer the following question:
CEO compensation A sample of 20 CEOs from theForbes 500 shows total annual compensations rangingfrom a minimum of $0.1 to $62.24 million. The averagefor these 20 CEOs is $7.946 million. Here’s a histogram:Based on these data, a computer program found that a 95%confidence interval for the mean annual compensationof all Forbes 500 CEOs is (1.69, 14.20) $ million. Whyshould you be hesitant to trust this confidence interval?
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