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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 2486 subjects randomly selected from an online group involved with ears. 944 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. E 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=D (Round to three decimal places as needed.) c) Construct the confidence interval. Question Viewer (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. 90% of sample proportions will fall between the lower bound and the upper bound. O B. 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. OC. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. O D. One has 90% confidence that the sample proportion is equal to the population proportion.

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 2486 subjects randomly selected from an online group involved with ears. 944 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. E 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=D (Round to three decimal places as needed.) c) Construct the confidence interval. Question Viewer (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. 90% of sample proportions will fall between the lower bound and the upper bound. O B. 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. OC. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. O D. One has 90% confidence that the sample proportion is equal to the population proportion.

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 8E: List the sample space of each experiment. Picking a one-digit number
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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 2486 subjects randomly selected from an online group involved with ears. 944 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. E 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=D (Round to three decimal places as needed.) c) Construct the confidence interval. O<p<O (Round to three decimal places as needed.) Question Viewer d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. 90% of sample proportions will fall between the lower bound and the upper bound. O B. 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. OC. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. O D. One has 90% confidence that the sample proportion is equal to the population proportion.
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 2486 subjects randomly selected from an online group involved with ears. 944 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. E 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=D (Round to three decimal places as needed.) c) Construct the confidence interval. O<p<O (Round to three decimal places as needed.) Question Viewer d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. 90% of sample proportions will fall between the lower bound and the upper bound. O B. 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. OC. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. O D. One has 90% confidence that the sample proportion is equal to the population proportion.
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