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A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n=945 and x=527 who said​ "yes." Use a 90% confidence level.

A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n=945 and x=527 who said​ "yes." Use a 90% confidence level.

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 research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll,
n=945
and
x=527
who said​ "yes." Use a
90%
confidence level.
 
LOADING...
Click the icon to view a table of z scores.
 
 
 
​a) Find the best point estimate of the population proportion p.
 
nothing
​(Round to three decimal places as​ needed.)
​b) Identify the value of the margin of error E.
 
E=nothing
​(Round to three decimal places as​ needed.)
​c) Construct the confidence interval.
 
nothing<p<nothing
​(Round to three decimal places as​ needed.)
​d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.
 
 
A.
One has
90​%
confidence that the sample proportion is equal to the population proportion.
 
B.
90​%
of sample proportions will fall between the lower bound and the upper bound.
 
C.
There is a
90​%
chance that the true value of the population proportion will fall between the lower bound and the upper bound.
 
D.
One has
90​%
confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.
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