In an effort to determine the percent of Portland residents that regularly bike to work, 500 residents are randomly selected and surveyed. 35% of those surveyed bike to work with a margin of error of ±3%. Construct the confidence interval.Is the confidence interval about a statistic or a parameter?Describe what the confidence interval tells you about the percent of Portland residents regularly bike to work.

Solution: From the given information, p-hat = 0.35 and margin of error is ±3%.

Answered: In an effort to determine the percent…

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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In an effort to determine the percent of Portland residents that regularly bike to work, 500 residents are randomly selected and surveyed. 35% of those surveyed bike to work with a margin of error of ±3%.

Construct the confidence interval.
Is the confidence interval about a statistic or a parameter?
Describe what the confidence interval tells you about the percent of Portland residents regularly bike to work.

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