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A polling agency interviews 875 American adults and finds that 560 think licensed drivers should be required to retake their road test once they reach 65 years of age. Round all answers to 4 decimal places.

A polling agency interviews 875 American adults and finds that 560 think licensed drivers should be required to retake their road test once they reach 65 years of age. Round all answers to 4 decimal places.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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 Elderly drivers. A polling agency interviews 875 American adults and finds that 560 think licensed drivers should be required to retake their road test once they reach 65 years of age. Round all answers to 4 decimal places.

I need help with 4 and 6

4. What are the lower and upper limits for the 90% confidence interval. 5. If we decided to use a higher confidence level, the confidence interval would be: A. narrower O B. wider C. stay the same If we used the same confidence level with a larger sample, the confidence interval would be: O A. narrower B. wider C. stay the same 6. Use the information from the polling agency to determine the sample size needed to construct a 99% confidence interval with a margin of error of no more than 4.1%. For consistency, use the reported sample proportion for the planning value of p* (rounded to 4 decimal places) and round your Z- value to 3 decimal places. Your answer should be an integer.
Transcribed Image Text:4. What are the lower and upper limits for the 90% confidence interval. 5. If we decided to use a higher confidence level, the confidence interval would be: A. narrower O B. wider C. stay the same If we used the same confidence level with a larger sample, the confidence interval would be: O A. narrower B. wider C. stay the same 6. Use the information from the polling agency to determine the sample size needed to construct a 99% confidence interval with a margin of error of no more than 4.1%. For consistency, use the reported sample proportion for the planning value of p* (rounded to 4 decimal places) and round your Z- value to 3 decimal places. Your answer should be an integer.
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