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 2516 subjects randomly selected from an online group involved with ears. 1111 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. Click the icon to view a table of z scores. www 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. lete 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 2516 subjects randomly selected from an online group involved with ears. 1111 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. Click the icon to view a table of z scores. www 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. lete E (Round to three decimal places as needed.) c) Construct the confidence interval. <<
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Question
![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 2516 subjects randomly selected from an online group involved with
ears. 1111 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys.
es
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.
I
lete
E=
(Round to three decimal places as needed.)
c) Construct the confidence interval.
/Round to three decimal nlarae ac noodlod 1
y
<p<](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd878d6ca-bc93-44ea-b5bf-5a977075ca79%2Fd0022be0-4eaf-4cdb-83af-581dee5c54a6%2Fxss5vfv_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 2516 subjects randomly selected from an online group involved with
ears. 1111 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys.
es
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.
I
lete
E=
(Round to three decimal places as needed.)
c) Construct the confidence interval.
/Round to three decimal nlarae ac noodlod 1
y
<p<
![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 2516 subjects randomly selected from an online group involved with
ears. 1111 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys.
Click the icon to view a table of z scores.
c) Construct the confidence interval.
<p<0
(Round to three decimal places as needed.)
d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.
O A. 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.
OB. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.
O C. 90% of sample proportions will fall between the lower bound and the upper bound.
OD. One has 90% confidence that the sample proportion is equal to the population proportion.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd878d6ca-bc93-44ea-b5bf-5a977075ca79%2Fd0022be0-4eaf-4cdb-83af-581dee5c54a6%2Fqt20cxj_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 2516 subjects randomly selected from an online group involved with
ears. 1111 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys.
Click the icon to view a table of z scores.
c) Construct the confidence interval.
<p<0
(Round to three decimal places as needed.)
d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below.
O A. 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.
OB. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound.
O C. 90% of sample proportions will fall between the lower bound and the upper bound.
OD. One has 90% confidence that the sample proportion is equal to the population proportion.
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