- Microsoft Edge h/PlisyerTestaspxitestid=2708522998?centerwin=yes Lesley Wallace 2 | 04/01/25 6:58 PM intial Stats) Question 13 of 15 This quiz: 15 point(s) possible This question: 1 point(s) possible Resume later Submit quiz 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 2598 subjects randomly selected from an online group involved with ears. 1004 surveys were returned Const a \( 90 \% \) confidence interval for the proportion of returned surveys. Click the icon to vew a table of z scores. \( \mathrm{E}=0.016 \) (Round to three decimal places as needed.) c) Construct the confidence interval. \( 0.394<p<0.425 \) (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 OC. One has \( 90 \% \) confidence that the sample proportion is equal to the population proportion. 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. (1) Time Limit: 02:00:00 Next Search
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- Total surveys sent: 2598 - Surveys returned: 1004 - Confidence level: 90% - Margin of error (E): 0.016 Show more…
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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 2326 subjects randomly selected from an online group involved with ears. 906 surveys were returned. Construct a 90% confidence interval for the proportion of returned surveys. 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. (Round to three decimal places as needed.) c) Construct the confidence interval. (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. - 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. - One has 90% confidence that the sample proportion is equal to the population proportion. - There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. - 90% of sample proportions will fall between the lower bound and the upper bound.
Qudsiya A.
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