A magazine article conducted a survey of 1000 people in Washington State and found that 26% of the population believe that Mount Saint Helens will have a repeat erruption this year. In the accompanying dialogue, the article states, we are 90% confident that the true proportion of people in Washington State who believe that Mount Sain Helens will have a repeat erruption this year lies between 23% and 29% . What does 90% represent in the article? O A. a confidence interval B. a confidence level C. a margin of error D. a statistic E. a parameter

MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Please see below. NOTE THAT THE ANSWER IS NOT (A) CONFIDENCE INTERVAL.
A magazine article conducted a survey of 1000 people in Washington State and found that 26% of the
population believe that Mount Saint Helens will have a repeat erruption this year. In the accompanying dialogue, the
article states, we are 90% confident that the true proportion of people in Washington State who believe that Mount Saint
Helens will have a repeat erruption this year lies between 23% and 29%. What does 90% represent in the article?
O A. a confidence interval
B. a confidence level
C. a margin of error
D. a statistic
E. a parameter
O O
Transcribed Image Text:A magazine article conducted a survey of 1000 people in Washington State and found that 26% of the population believe that Mount Saint Helens will have a repeat erruption this year. In the accompanying dialogue, the article states, we are 90% confident that the true proportion of people in Washington State who believe that Mount Saint Helens will have a repeat erruption this year lies between 23% and 29%. What does 90% represent in the article? O A. a confidence interval B. a confidence level C. a margin of error D. a statistic E. a parameter O O
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