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95% confidence interval for a proportion has a lower bound of 0.30 and a margin of error of 0.05. 1. What is p- hat? 2. what is the confidence interval? A. (0.20, 0.30) B. (0.25, 0.30) C. (0.25, 0.35) D. (0.30, 0.40) 3. Based on this confidence interval, is it safe to say the proportion is less than half with 95% confidence? 4. If you were to change the 95% confidence interval to a 90% confidence interval, would the interval get narrower or wider? 5. If you were to use the same data used for this confidence interval

95% confidence interval for a proportion has a lower bound of 0.30 and a margin of error of 0.05. 1. What is p- hat? 2. what is the confidence interval? A. (0.20, 0.30) B. (0.25, 0.30) C. (0.25, 0.35) D. (0.30, 0.40) 3. Based on this confidence interval, is it safe to say the proportion is less than half with 95% confidence? 4. If you were to change the 95% confidence interval to a 90% confidence interval, would the interval get narrower or wider? 5. If you were to use the same data used for this confidence interval

MATLAB: An Introduction with Applications
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 95% confidence interval for a proportion has a lower bound of 0.30 and a margin of error of 0.05. 1. What is p- hat? 2. what is the confidence interval? A. (0.20, 0.30) B. (0.25, 0.30) C. (0.25, 0.35) D. (0.30, 0.40) 3. Based on this confidence interval, is it safe to say the proportion is less than half with 95% confidence? 4. If you were to change the 95% confidence interval to a 90% confidence interval, would the interval get narrower or wider? 5. If you were to use the same data used for this confidence interval but instead you were to test the hypothesis H0:p=0. 5 and Ha:p≠0.5, would you reject or fail to reject the null hypothesis?
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