Days before a presidential election, an article based on a nationwide random sample ofregistered voters reported the following statistic, "52% (±3%) of registered voters willvote for Robert Smith." What is the "±3%" called?The "±3%" is called theconfidence interval for a proportion.margin of error.sample proportion.standard error. A graduate student wanted to estimate the average time spent studying amonggraduate students at her school. She randomly sampled graduate students from herschool and obtained a 99% confidence interval of (17,25) hours/week. Which of thefollowing would be true if the level of confidence was lowered to 95%?Choose the correct answer below.OA. The width of the confidence interval would be smaller.B. The width of the confidence interval would be larger.C. The width of the confidence interval would remain the same.D. More information is needed to determine what would happen to the width of theconfidence interval.

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Answered: Days before a presidential election, an…

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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Days before a presidential election, an article based on a nationwide random sample of registered voters reported the following statistic, "52% (±3%) of registered voters will vote for Robert Smith." What is the "±3%" called? The "±3%" is called the