Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2380 subjects randomly selected from an online group involved with ears. 1008 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. Round to three decimal places as needed.) b) Identify the value of the margin of error E. E= (Round to three decimal places as needed.) c) Construct the confidence interval.
Use the sample data and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2380 subjects randomly selected from an online group involved with ears. 1008 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. Round to three decimal places as needed.) b) Identify the value of the margin of error E. E= (Round to three decimal places as needed.) c) Construct the confidence interval.
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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![Use the sample data and confidence level given below to complete parts (a) through (d).
In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2380 subjects
randomly selected from an online group involved with ears. 1008 surveys were returned. Construct a 90%
confidence interval for the proportion of returned surveys.
: Click the icon to view a table of z scores.
a) Find the best point estimate of the population proportion p.
దియంవాలి
(Round to three decimal places as needed.)
b) Identify the value of the margin of error E.
E=
(Round to three decimal places as needed.)
c) Construct the confidence interval.
<p<]
(Round to three decimal places as needed.)
d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.
O A. There is a 90% chance that the true value of the population proportion will fall between the lower bound
and the upper bound.
O B. 90% of sample proportions will fall between the lower bound and the upper bound.
O C. One has 90% confidence that the sample proportion is equal to the population proportion.
O 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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa7fda848-5a2f-424e-9c01-ca714dc2af5d%2F6c60b97c-6dec-43a8-a019-2531a9be70c5%2Fo2pocmt_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Use the sample data and confidence level given below to complete parts (a) through (d).
In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2380 subjects
randomly selected from an online group involved with ears. 1008 surveys were returned. Construct a 90%
confidence interval for the proportion of returned surveys.
: Click the icon to view a table of z scores.
a) Find the best point estimate of the population proportion p.
దియంవాలి
(Round to three decimal places as needed.)
b) Identify the value of the margin of error E.
E=
(Round to three decimal places as needed.)
c) Construct the confidence interval.
<p<]
(Round to three decimal places as needed.)
d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.
O A. There is a 90% chance that the true value of the population proportion will fall between the lower bound
and the upper bound.
O B. 90% of sample proportions will fall between the lower bound and the upper bound.
O C. One has 90% confidence that the sample proportion is equal to the population proportion.
O 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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